How music can manipulate our emotional processes Facebook X (Twitter) WhatsApp LinkedIn Pinterest Copy link The cognitive orchestra Last updated: 17/06/25, 12:21 Published: 26/06/25, 08:00 How music can manipulate our emotional processes Introduction Music has considerably always been a universal way of communicating. Every day, we are introduced to new genres and concepts despite the differences in language or musical techniques. As a result, psychology has increasingly researched music and its effects on human cognition. Music as a means of therapy The common way most people use music is to regulate their emotions. When we are feeling down, we are more than likely to choose a melancholic playlist over an upbeat one. It has been found that music aids in uplifting mood and reducing anxiety. Juslin and Sloboda (2010) demonstrated that people often choose to listen to music that links to how they are feeling in the moment or even how they desire to feel. With music being deemed a powerful emotional mechanism, music therapy has seen its benefits as a tool for regulating emotions. Thoma et al. (2013) support the idea of music being used for treating conditions like depression and PTSD, with their findings indicating that music listening impacts the psychobiological stress system. Listening to music prior to a stressful event predominantly affected the autonomic nervous system by recovering the nerves much faster, although the effects on the physiological stress and the endocrine (stress hormones) were not as noticeable. However, just as all forms of therapy are not generalisable to everyone, music therapy is not always an appropriate solution. The over-reliance on music to regulate feelings can lead to emotional avoidance and not addressing the initial cause of low mood. This leaves no room for solving the issues at hand. In the context of neurological rehabilitation, it was suggested that further controlled studies are needed to establish the efficacy of music in neurological recovery, and music-based interventions are emerging as promising rehabilitation strategies. Mental clarity or spiritual melodies? The benefits music can hold for our cognitive abilities are endless. Musical training in childhood, studied by Forgeard et al. (2008), is positively correlated with enhanced fine motor skills and non-verbal reasoning. Children were predicted to have much better cognitive flexibility and strengthened memory, outperforming the experimental control group. Another advantage music holds for cognitive abilities is making tasks easier to work with. Lesiuk (2005) conducted a study into the influence of music on mood and work performance. He introduced a ‘no music’ rule for workers in a software company, where they were prohibited from listening to music whilst working. The results demonstrated a predictable decrease in quality of work once music was abandoned, which workers were not habitually familiar with. Performance in quality of work remained poor in week 4, but managed to improve again when music was involved again during week 5. Although, it is important to note that music as a means of concentrating is not always beneficial. Lyrical songs can potentially act as a distractor when completing tasks that require verbal or visual memory, hindering our cognitive ability. Zulkurnaini et al. (2012) studied Lesiuk (2005) hypothesis, exposing participants to classical music and a verse from the Quran. By observing EEG signals, they found that listening to the Quran resulted in a more relaxed state compared to classical music. They also found that listening to the Quran increased the alpha band in the brain, which is associated with relaxation. Conclusion It is clear music is more than just a background track while completing daily errands. The influence it has on emotional well-being, memory and mood is vital to acknowledge. With evidence of positive correlations between cognitive productivity and listening to music, and neurological research of in-depth brain studies, the effects of music are much more prevalent to us. Future research should aim to look into the long-term effects on cognitive functioning, more specifically within clinical settings like neurorehabilitation. Written by Tania Khan Related article: Chemistry of emotions REFERENCES Schäfer, T., Sedlmeier, P., Städtler, C., & Huron, D. (2013). The psychological functions of music listening. Frontiers in Psychology, 4 , 511. Juslin, P. N., & Sloboda, J. A. (2010). Music and emotion. In P. N. Juslin & J. A. Sloboda (Eds.), Handbook of Music and Emotion: Theory, Research, Applications (pp. 3-20). Oxford University Press. Thoma, M. V., La Marca, R., Brönnimann, R., Finkel, L., Ehlert, U., & Nater, U. M. (2013). The effect of music on the human stress response. PLOS ONE, 8 (8), e70156. Krause, A. E., North, A. C., & Heritage, B. (2023). The role of music listening in reducing stress and anxiety: A meta-analysis. PLOS ONE, 18 (1), e0281337 Lesiuk, T. (2005). The effect of music listening on work performance. Psychology of Music, 33 (2), 173-191. Lesiuk, T. (2012). The effect of music listening on work performance. IEEE Transactions on Professional Communication, 55 (4), 282-290. Lesiuk, T. (2005). The effect of music listening on work performance. PLOS ONE, 8 (8), e70156. Miller, A. H., Haroon, E., Raison, C. L., & Felger, J. C. (2017). Cytokine targets in the brain: Impact on neurotransmitters and neurocircuits. The Lancet Neurology, 16 (11), 1013-1025. Project Gallery

Civil wars and arms trade Facebook X (Twitter) WhatsApp LinkedIn Pinterest Copy link Yemen- a neglected humanitarian crisis Last updated: 03/05/26, 18:20 Published: 15/05/25, 08:00 Civil wars and arms trade This is article no. 3 in a series about global health injustices. Previous article: Civil war in Sudan . Next article: Injustices in Lebanon and Syria . Introduction Welcome to the third article of the Global Health Injustices Series. Building on the last article on Sudan , the focus is now on Yemen, by analysing the health inequalities and inequities the broader Yemeni population encounters. Similar to Sudan, there is a civil war between the government and the Houthis, among other political factions in Yemen, producing detrimental population health outcomes that will be delved into after an overview of Yemen's history and current state. Yemen: a distinct past and its current challenges Yemen is a country in the Middle East bordered by Saudi Arabia and Oman. Like Palestine and Sudan, Yemen is noteworthy for its distinct culture, languages and traditions. Moreover, Yemen has been part of trade routes with other surrounding countries for centuries and even now, as it is adjacent to the Red and Arabian Seas. However, as far back as the 1990s, when Yemen gained independence after varying degrees of resisting colonialism, internal friction within the government has led to civil wars even before this current one. At the moment, Yemen has one of the highest rates of mal- and undernutrition in the Middle East due to approximately half of the Yemeni people living in poverty and lacking access to clean water. Additionally, around 4.5 billion people are displaced in Yemen, and have been displaced in many instances since 2015. Furthermore, in spite of the ongoing civil war, Yemen has at least 97,000 asylum seekers and refugees from countries like Somalia and Ethiopia. Taking into account this important context, it is vital to support the Yemeni population as well as the refugees and asylum seekers. This is because they are facing injustices, which then lead to worsening outcomes for numerous people in Yemen. Although this crisis is ongoing, the Yemeni people, the refugees and asylum seekers stay resilient within their communities. Civil war and the consequences of the arms trade Unfortunately, Yemen has been noted by the WHO as an ignored humanitarian crisis, where approximately 20 million people need emergency healthcare. Specifically, 17.3 million people are driven to starvation, including 1.15 million children under 5 years old being acutely malnourished, having a 30-50% mortality risk. Although these statistics are driven by the ongoing civil war fueled by the arms trade between the Yemeni government, others in the Middle East and notably the United States, it is essential to highlight the other factors in Yemen driving childhood malnutrition. One study found that as maternal education, social and economic status increase, the likelihood of malnutrition in children decreases. Moreover, cigarette smoking during pregnancy increased the number of children with malnutrition. It could be inferred that there was a lot of internal instability within Yemen when this study occurred, leading to these health outcomes for the children, which have been currently worsened by the ongoing civil war, with further fuel from the arms trade. Regarding mental health in Yemen, one article noted how the COVID-19 pandemic, on top of the civil war, has impacted access to mental health care. Approximately 20% of Yemenis suffer from at least one mental health disorder, which includes anxiety, depression and schizophrenia. However, seeking help for mental health has been hindered by stigma and superstition, notably how people with these concerns may be described as dangerous. These gaps underline a lack of resources and facilities in Yemen attributed to damage from the ongoing civil war. Shifting to infectious diseases, the civil war in Yemen has contributed to a high burden of neglected tropical diseases (NTDs), which are diseases affecting low-income countries that lack healthcare resources, infrastructure and sanitation and hygiene facilities. The most notable include dengue fever, salmonella, and schistosomiasis ( Figure 1 ). The exact epidemiological data of NTDs in Yemen is difficult to find because there is a lack of infectious disease surveillance, and the healthcare system is fractured. Focusing on Yemen’s healthcare system, one review noted six key areas from the World Health Organisation that are involved in a strong healthcare system: health information systems, health workforce, governance, service delivery, access to essential medicines, and financing. Each area is weakened by the civil war, but here is a glimpse of each area, with some of the steps forward. Firstly, the review suggested that health information systems are deficient, so the authors urged the creation of a health survey system for Yemen. Since 2015, the health workforce has decreased by 50%, where more than half of workers left their jobs as they were not getting paid; retaining them could be through voucher programs and payment contracts. Also, access to essential medicines, particularly for chronic diseases, is scarce due to lack of funding, limited imports and damage to infrastructure. As for service delivery, at least 50% of healthcare buildings are operating, with airstrikes destroying more than 500 buildings, leaving vital services like emergency obstetric care very restricted. Although financing on healthcare has increased from 0.8% in 2004 to approximately 2.9-4.1%, with further investment to up to 12%, the population still has to pay out-of-pocket for healthcare. To move forward, the author noted how crucial it is to increase government spending on health. However, enhancing these areas must begin with improving governance, or the key leaders in Yemen congregating to make decisions that lead to a more robust healthcare system. Currently, there are issues due to bureaucracy, top-down management and friction between the Yemeni government, the Houthis and the other political factions. As mentioned above, one area of service delivery severely impacted by the ongoing war is obstetric care, along with newborn and child health. One case study noted that although these areas are a priority, there were instances, like tackling cholera outbreaks ( Figure 2 ) and treating malnutrition, which were offered priority over other forms of care. This imbalance reflects that more funding is required for all of the healthcare service areas to run optimally. One way forward is to include not only the leaders in Yemen, but also international NGOs to bring in their expertise to support the re-development of the healthcare system. The role of NGOs in supporting the Yemeni population NGOs have a vital role in supporting vulnerable populations, especially in Yemen. In a 2025 report from Amnesty International, they noted several breaches of international law and human rights: Parties to the conflict in Yemen continued to arbitrarily detain, forcibly disappear and unjustly prosecute people who criticized their human rights records and policies, including human rights defenders, journalists and humanitarian workers. All parties to the conflict failed to protect economic and social rights amid international funding cuts that further worsened the humanitarian crisis. Parties to the conflict contributed to environmental degradation. Other NGOs, such as the United Nations High Commissioner for Refugees (UNHCR), stated their provision of lifesaving aid to refugees, asylum seekers and displaced Yemenis, along with other forms of support through cash and essential supplies. The first way forward towards upholding the health and wellbeing of the broader population is to establish clearer governance among the leaders in Yemen. This could be facilitated by NGOs and other stakeholders, perhaps the other governments too, by stopping arms trade and increasing humanitarian aid. Conclusion: looking ahead at clearer governance Throughout this article, evidence indicates that the civil war in Yemen has devastating impacts on the health and wellbeing of the population. From individuals unable to seek appropriate mental health support, to a divided healthcare system with limited funding and other deficits. Consequently, the leaders in Yemen must come together to uphold international law and human rights, while NGOs are vital in facilitating this dynamic. My previous words on holding people in power worldwide accountable to human rights and international law are very relevant for Yemen. This is because they are responsible for enabling the ongoing civil war through the arms trade, so urging these people in power, particularly in Western countries, to stop would be a major step forward in de-escalating the humanitarian crisis. For the next article in the Global Health Injustices Series, it will be a collaborative endeavour that focuses on both Syria and Lebanon, two bordering countries that have diverging yet connected struggles; by understanding them, we can ensure that the populations in both countries obtain as much support as possible to improve their health outcomes. Written by Sam Jarada Related article: Understanding health through different stances REFERENCES UNHCR. Yemen Crisis Explained. 2024. Available from: https://www.unrefugees.org/news/yemen-crisis-explained/ WHO. Achieving health for all in Yemen. 2023. Available from: https://www.emro.who.int/images/stories/yemen/achieving-health-for-all-in-yemen.pdf Capitalizing on Conflict: How U.S. arm sales fuel the humanitarian crisis in Yemen. OpenSecrets. 2024. Available from: https://www.opensecrets.org/news/reports/capitalizing-on-conflict/yemen-case-study Sunil TS. Effects of socio‐economic and behavioural factors on childhood malnutrition in Yemen. Maternal and Child Nutrition. 2009 Feb 3;5(3):251–9. Available from: https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1740-8709.2008.00174.xm Waleed Alhariri, Mcnally A, Knuckey S. The Right to Mental Health in Yemen: A Distressed and Ignored Foundation for Peace. Health and Human Rights. 2021 Jun;23(1):43. Available from: https://pmc.ncbi.nlm.nih.gov/articles/PMC8233030/ Ahmed A, Rahmat Dapari, Dom NC. Neglected tropical diseases in Yemen: a systematic review of epidemiology and public health challenges. BMC Public Health. 2025 Feb 7;25(1). Available from: https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-025-21700-z#Fig3 Ali Alraimi A, Shelke A. Strengthening Health Systems in Conflict: Evidence-Based Policies for Quality Care in Yemen. Journal of Cardiovascular and Cardiology. 2024 Mar 31;1–4. Available from: https://oaskpublishers.com/assets/article-pdf/strengthening-health-systems-in-conflict-evidence-based-policies-for-quality-care-in-yemen.pdf Tappis H, Elaraby S, Shatha Elnakib, Abdulghani A, Huda BaSaleem, Saleh A, et al. Reproductive, maternal, newborn and child health service delivery during conflict in Yemen: a case study. Conflict and Health. 2020 May 27;14(1). Available from: https://conflictandhealth.biomedcentral.com/articles/10.1186/s13031-020-00269-x Human rights in Yemen. Amnesty International. 2023. Available from: https://www.amnesty.org/en/location/middle-east-and-north-africa/middle-east/yemen/report-yemen/ Project Gallery

Delving into the 'Nudge' effect by Thaler and Sunstein Facebook X (Twitter) WhatsApp LinkedIn Pinterest Copy link Libertarian Paternalism and the ‘Nudge’ Approach Last updated: 02/07/26, 21:08 Published: 06/11/25, 08:00 Delving into the 'Nudge' effect by Thaler and Sunstein This is article no. 4 in a series on behavioural economics. Next article: Effect of time (coming soon). Previous article- Loss aversion . So far in our series of behavioural economics, we have discussed why and how people may make less favourable decisions than traditional economics assumes. We have spoken about how people can still be honest even when they are faced with a decision where they can be materially better off; and when someone loses their wallet, they feel more distaste than finding some money on the street; and how an endowment adds a bizarre sense of additional worth, that would cause you to think twice about trading it for something equally valuable. In today’s article, we are going to address why this is important to policy makers, and subsequently you and I, by exploring how governments and institutions can influence our decisions in ways that may seem paternalistic yet still respect individual freedom. This idea lies at the heart of libertarian paternalism . The idea behind the “Nudge” Nudge is a book written by Nobel Prize–winning economist Richard Thaler and legal scholar Cass Sunstein. Building on their 2003 paper, the book develops the idea that people’s choices can be shaped not only by the options available, but also by the context in which those options are presented — even by factors that seem trivial or irrelevant. This is where the concept of a “nudge” comes in: small design changes that steer people toward better decisions without restricting their freedom to choose. A simple change: the pension example A classic example comes from workplace pensions. Before 2008, when someone joined a new company, they were asked whether they wanted to join the company pension scheme. Most people didn’t — they took their full pay instead and failed to save for retirement. This created a growing problem for the government: an ageing population without enough savings to maintain a comfortable lifestyle. The solution was remarkably simple. Instead of asking employees to opt in to a pension, companies began enrolling them automatically, giving them the option to opt out instead. The choice remained exactly the same, pension or no pension, but the framing made all the difference. Opting out felt like losing something, and because people are naturally loss-averse, far fewer did so. In 2012, just under 50% of employees in the private sector had a pension. By 2018, after the introduction of auto-enrolment, that number had risen to around 80%. All from a change in default wording on a form. Libertarian Paternalism – a justification Paternalism is generally considered the situation where the government interferes in our choices, for better or for worse, much like a parent telling their children what they can and cannot do. In many cases, society accepts paternalism as necessary: we ban harmful drugs, make theft illegal, and impose safety regulations. But should governments really be meddling with our personal financial decisions? Should they be influencing our choices about pensions, spending, or saving? Whether they should or shouldn’t is ultimately a political question, not an economic one. However, what we can do is consider Richard Thaler and Cass Sunstein’s explanation of why policies such as pension defaults represent something fundamentally different. When the government restricts drugs or criminalises theft, it removes our freedom to choose — these are examples of hard paternalism, enforced by law. But with pensions, the government doesn’t force participation. The choice remains entirely yours: you can stay enrolled or opt out. This preservation of choice embodies the libertarian element — the freedom to decide for oneself. At the same time, by changing how the choice is presented, such as making enrolment the default option, policymakers can dramatically alter behaviour in a direction they consider beneficial. That is where the paternalistic element comes in. According to Thaler and Sunstein, this combination of freedom and gentle guidance is what defines libertarian paternalism . In Thaler and Sunstein’s eyes, nudging individuals towards better decisions through the use of policy is better and less controversial than implementing outright bans and mandates. It respects our autonomy while encouraging outcomes that they believe will improve collective welfare. If the government genuinely believes certain decisions are in the public’s best interest, then libertarian paternalism provides a way to influence behaviour without infringing on people’s right to choose. A question of freedom I do, however, pose some questions to you. If the government can influence your decision making through manipulating people’s psychology, can it truly be called libertarian ? And more fundamentally - does the government really know best? In recent years, the 'Nudge' approach has faced criticism, particularly regarding the assumptions it makes about what constitutes a “better” decision and who gets to define it. Despite this, the research continues to shape public policy across the world — from pensions and health to energy use and education. What’s crucial is that we remain aware of the ways our choices can be influenced. Recognising these nudges allows us to make decisions that best reflect our own values, circumstances, and goals. And on a deeper level, if every choice we make can be subtly shaped by those in power, how do we ensure that nudges serve the public interest — and not the interest of those who nudge? Written by George Chant Related article: The halo effect Project Gallery

Looking at silicon dioxide Facebook X (Twitter) WhatsApp LinkedIn Pinterest Copy link The effects of nanoparticles on health Last updated: 17/07/25, 11:50 Published: 01/05/25, 08:00 Looking at silicon dioxide There are around 100 trillion harmless and beneficial microbes in the gut, representing as many as 5,000 different species! They are called the gut microbiota and are essential for regulating brain function through the microbiota-gut-brain axis, controlling intestinal inflammation and more. Nanoparticles may alter the gut microbiota, posing a risk to health and well-being. Read on to find out more about how. What are nanoparticles? Nanoparticles are small particles that are usually less than 100 nm in diameter. One example of a common nanoparticle is silicon dioxide, which can be found as the food additive E551. Silicon dioxide nanoparticles (SiO2NPs) are commonly used as anti-caking agents in free-flowing powdery food products, such as spices and coffee. These nanoparticles can be toxic, damaging cells, tissues, and organs including the liver, kidneys, and lungs. The damage is primarily due to the way SiO2NPs react in the body as a result of their size: even though SiO2NPs are bigger than 100 nm in the form of E551, when the SiO2NPs are in the gastrointestinal tract, they can clump together and degrade into a smaller size of 10-50 nm. The experiment Researchers completed several experiments to examine the effects of exposure to SiO2NPs on health. This article will specifically talk about one experiment where they looked at the impacts of SiO2NPs on the gut microbiota. For this experiment, the researchers hypothesised that oral exposure to SiO2NPs will cause changes in the gut microbiota, affecting diversity and function in mice. 20 healthy male 4-week-old mice were used, weighing 8 to 12 grams. Researchers administered either SiO2NPs solution or vehicle solution for 28 days. The vehicle solution can be considered the control and was created out of a sterile saline solution. All bacteria contain the 16S rRNA gene which is highly conserved, meaning that the sequence remains mostly unchanged across different species. After 28 days, the researchers took faecal samples from the mice and conducted 16S rRNA gene sequencing of the bacterial DNA in the faeces to analyse the gut microbiota. Figure 1 shows the process of 16S rRNA gene sequencing, a method used to identify and compare bacterial diversity without needing to grow bacterial cultures. Because it is culture-free, 16S sequencing can survey complex microbiomes or difficult environments to study. This technique is commonly used to identify bacteria down to the genus or species level, depending on the needs of the experiments. Researchers looked at the alpha diversity of the gut microbiota, with Sob, Ace, Chao, Simpson, and Shannon indices being used. Sob, Ace and Chao give information about the number of species, while Simpson and Shannon give information about the community diversity, including the species evenness. The results The results of this experiment, as seen in Figure 2 , show that there was a significant increase in Sob, Ace, and Chao indices, but there was no substantial change in Simpson or Shannon indices. This suggests that SiO2NPs can change the diversity of gut microbiota, which could impact their biological functions. For example, if there are changes to the gut microbiota, it could result in increased inflammation in the intestine. This could potentially lead to the immune system’s defences in the gut being weaker, allowing harmful pathogens to pass through the epithelial barrier more easily. Conclusion One of the main weaknesses of this experiment is that it was conducted on mice. Because of this, the study's findings cannot be directly translated to humans. In addition, the study was conducted over only 28 days, meaning we don’t know the long-term effects and consequences of the impacts of SiO2NPs on the gut microbiota. Nevertheless, this is still a critical study as it shows that SiO2NPs do impact the gut microbiota. It also shows that maintaining healthy gut microbiota is important. This can be done by being mindful of what we eat. So next time, instead of having instant noodles full of additives, think about making a home-made soup with your favourite vegetables! Eating unprocessed whole foods is not just good for us, but also for our gut microbiota! Written by Naoshin Haque Related articles: Nanomedicine / Nanoparticles as diabetes treatment / Nanogels / Nanocarriers / Silicon hydrogel lenses / Microbiota Project Gallery

Unveiling the paradigm shift in cognitive impairment through machine learning Facebook X (Twitter) WhatsApp LinkedIn Pinterest Copy link Brain metastasis hacks brain activity and jams neuronal communication Last updated: 29/05/25, 11:46 Published: 29/05/25, 08:00 Unveiling the paradigm shift in cognitive impairment through machine learning Understanding the impact of brain metastasis on neuronal communication Introduction Researchers from the Spanish National Research Council (CSIC) and the Spanish National Cancer Research Centre (CNIO) have made a ground-breaking discovery related to brain metastasis and its impact on brain activity and neuronal communication. This finding could potentially explain why half of all patients with brain metastasis experience cognitive impairment. Understanding the influence on neural circuits The research , published in Cancer Cell, aimed to comprehend how brain metastasis affects the functionality of neuronal circuits beyond the physical mass of the tumour. The researchers conducted multidimensional modelling of brain functional analyses in the context of brain metastasis and tested various preclinical models from different primary sources and oncogenic profiles. The study was able to separate the effect on local field potential oscillatory activity from cortical and hippocampal areas. This helped researchers learn more about the different ways that brain metastasis can affect people. The authors highlighted the importance of this comprehensive approach in unravelling the complex dynamics of brain metastasis. Detecting metastases through electrical activity Through the measurement of electrical activity in the brains of mice with and without metastases, the researchers discovered distinct electrophysiological differences between the two groups. The researchers used artificial intelligence to confirm that metastases were indeed to blame for these differences. Using an automatic algorithm trained with numerous electrophysiological recordings, the researchers developed a model that could accurately identify the presence of metastases. Furthermore, the algorithm demonstrated the ability to distinguish metastases originating from different primary tumours, such as skin, lung, and breast cancer. These findings provide clear evidence of the specific impact that metastasis has on the brain's electrical activity. Paradigm shift in understanding brain metastases The study represents a significant paradigm shift in the understanding of brain metastases. Traditionally, neurological dysfunction in patients with brain metastasis was attributed solely to the physical mass effect of the tumour. However, this research indicates that changes in brain activity resulting from tumour-induced biochemical and molecular alterations also contribute to these symptoms. The implications of this paradigm shift are far-reaching and have potential implications for the prevention, early diagnosis, and treatment of brain metastasis. By recognising that neurological symptoms are not solely due to the physical presence of the tumour, medical professionals can explore novel diagnostic and therapeutic strategies. Potential therapeutic targets Looking ahead, the researchers are eager to explore potential therapeutic targets that can protect the brain from cancer-induced disruptions in neuronal circuits. They aim to identify molecules involved in metastasis-induced changes in neuronal communication, intending to evaluate them as possible therapeutic targets. The researchers want to create strategies that might stop or lessen the neurological dysfunction that patients frequently experience by understanding the biochemical and molecular changes brought on by brain metastasis. This could lead to advancements in the prevention, early diagnosis, and treatment of brain metastasis, ultimately improving patient outcomes. Conclusion The groundbreaking studies carried out by the Spanish National Research Council and the Spanish National Cancer Research Centre have shed light on how brain metastasis affects brain activity and neuronal communication. By dissociating the effects of tumour mass from changes in brain activity, the study has revealed the complex dynamics of brain metastasis and its contribution to cognitive impairment in patients. The discovery of distinct electrophysiological differences and the development of an algorithm to detect metastases offer promising opportunities for early diagnosis and personalised treatment. This paradigm shift in understanding brain metastases opens the door for novel diagnostic and therapeutic strategies, as well as the exploration of potential therapeutic targets to protect the brain from cancer-induced disruptions. With further research, it is hopeful that advancements in the prevention, early diagnosis, and treatment of brain metastasis will improve patient outcomes and lead to a better understanding of neurological dysfunction in these patients. Written by Sara Maria Majernikova Related articles: Cancer on the move / Cancer magnets / Latent space transformations / Uploading brain to a computer REFERENCE Sanchez-Aguilera A, Masmudi-Martín M, Navas-Olive A, Baena P, Hernández-Oliver C, Priego N, Cordón-Barris L, Alvaro-Espinosa L, García S, Martínez S et al : Machine learning identifies experimental brain metastasis subtypes based on their influence on neural circuits . Cancer Cell 2023, 41 (9):1637-1649.e1611. Project Gallery

Investigating the different mechanisms that can lead to high blood pressure Facebook X (Twitter) WhatsApp LinkedIn Pinterest Copy link What really happens inside the body during high blood pressure Last updated: 08/10/26, 18:55 Published: 08/10/26, 08:00 Investigating the different mechanisms that can lead to high blood pressure Introduction Hypertension is often described in simple terms - a number on a screen or a diagnosis made in clinical practice. Yet behind these readings lies a complex network of underlying biological processes. Long before complications arise, subtle changes in the kidneys, blood vessels, and hormonal systems begin to disrupt the body’s ability to regulate blood pressure. Understanding these mechanisms reveals how hypertension develops and why it remains one of the most pressing challenges in modern health. Cardiac output and peripheral resistance Blood pressure is maintained through a balance between cardiac output and peripheral resistance. Cardiac output is the volume of blood pumped per minute, and peripheral resistance is the resistance to blood flow in the peripheral vasculature. In most individuals with hypertension, cardiac output remains relatively normal. Instead, the problem lies with increased resistance in circulation. This resistance is primarily controlled by small blood vessels known as arterioles, which have muscular walls that can constrict or relax to regulate blood flow. Contraction of these muscles is driven partly by increased intracellular calcium, which causes the vessels to narrow and increases resistance. Excess sodium intake further contributes by increasing fluid volume and making blood vessels more likely to constrict ( Figure 1 ). Over time, persistent vasoconstriction can lead to structural changes in the vessel walls, causing them to thicken and become less flexible. Hormones such as angiotensin contribute to this process, resulting in a sustained and often irreversible increase in peripheral resistance. Renin-angiotensin system One of the most important hormonal systems involved in blood pressure regulation is the renin-angiotensin system. This system is activated when the body senses a drop in blood flow, reduced salt intake, or increased sympathetic activity. In response, the kidneys release renin, an enzyme that converts angiotensinogen to angiotensin I ( Figure 2 ). Angiotensin I is then converted to angiotensin II in the lungs. Angiotensin II plays a central role in raising blood pressure and stimulates the release of the hormone aldosterone from the adrenal gland, which promotes sodium and water retention in the kidneys. Together, these effects increase both vascular resistance and blood volume, leading to a rise in blood pressure. People with high blood pressure do not always have low renin levels. Some have normal renin levels because the kidneys are not strongly activated to change renin release. In contrast, others have high renin levels because reduced blood flow to parts of the kidney stimulates renin release. In some cases, this can be due to underlying kidney or hormonal diseases. Autonomic nervous system The autonomic nervous system (ANS) also plays an important role in regulating blood pressure by controlling how wide or narrow blood vessels are. During stress or physical activity, the sympathetic nervous system (SNS), one division of the autonomic nervous system, is activated, causing the release of noradrenaline and adrenaline. These hormones increase heart rate and cause blood vessels to narrow (vasoconstriction), resulting in an increase in blood pressure. Although this response is important for short-term blood pressure regulation, it is not the main cause of chronic hypertension. However, overactivity of the SNS can contribute to persistently high blood pressure. Their role still remains significant, as drugs that reduce sympathetic activity are effective in lowering blood pressure. For example, adrenergic drugs such as beta-blockers act as sympatholytics by blocking the effects of noradrenaline at adrenergic receptors in the heart and blood vessels, reducing heart rate and how strongly the heart pumps, which decreases blood pressure. This highlights the contribution of the autonomic nervous system to hypertension. Endothelium dysfunction The endothelium, the inner lining of the blood vessels, is another key regulator of vascular function. In hypertension, the endothelium becomes dysfunctional, both contributing to and resulting from high blood pressure. Factors such as smoking, diabetes, and high cholesterol can contribute to this process. A key feature of endothelial dysfunction is reduced production of nitric oxide, a molecule that promotes vasodilation. With less nitric oxide available, blood vessels are less able to dilate, which increases resistance and sustains high blood pressure. Oxidative stress further worsens this process by generating reactive oxygen species (ROS) that damage the endothelium and reduce the availability of nitric oxide, creating a cycle that reinforces hypertension. ROS are generated as by-products of mitochondrial metabolism, and their levels increase under conditions of inflammation and metabolic stress. Insulin resistance Insulin resistance is also strongly associated with hypertension. It contributes through several mechanisms, including increased sympathetic activity, sodium retention, and structural changes in blood vessels. Importantly, insulin normally promotes vasodilation, but in individuals with hypertension, this effect is impaired, leading to increased vascular resistance. Genetic and lifestyle factors In addition to these physiological mechanisms, genetic and environmental factors play a significant role in the development of hypertension, including lifestyle influences such as diet, physical activity, electrolyte imbalance and obesity. Conclusion Overall, hypertension is a multifactorial condition that arises from the interaction of vascular, renal and hormonal systems, influenced by both genetic predisposition and environmental factors. These interconnected processes create a cycle that sustains and progressively worsens elevated blood pressure over time, highlighting the complexity of its pathophysiology. Written by Michelle Amoah Related articles: Hypertension / Cardiac regeneration REFERENCES Adua, E. (2022). Decoding the mechanism of hypertension through multiomics profiling. Journal of Human Hypertension, 37(4), 253–264. Beevers, G., Lip, G. Y. H., and O’Brien, E. (2001). The pathophysiology of hypertension. BMJ, 322(7291), 912.1-916. Hayat, M. A. (2015). Introduction to Autophagy. In Autophagy: Cancer, Other Pathologies, Inflammation, Immunity, Infection, and Aging (pp. 1–53). Elsevier. Klabunde, R.E. (2024). Centrally Acting Sympatholytics. CV Pharmacology. Available at: https://cvpharmacology.com/vasodilator/central-acting . Accessed 4th July, 2026. Nadar, S. (2015). Pathophysiology of hypertension. In Hypertension (pp. 9–14). Oxford University Press. Nepali, P., Suresh, S., Pikale, G., Jhaveri, S., Avanthika, C.,Bansal, M., Islam, R., and Chanpura, A. (2022). Hypertension and the Role of Dietary Fiber. Current Problems in Cardiology, 47(7), 101203. Sahay, M., and Sahay, R. (2012). Low renin hypertension. Indian Journal of Endocrinology and Metabolism, 16(5), 728. Project Gallery

Simplifying light: photons, wave-particle duality and the Observer Effect Facebook X (Twitter) WhatsApp LinkedIn Pinterest Copy link Light: one of the biggest mysteries in physics Last updated: 20/10/25, 15:28 Published: 23/10/25, 08:00 Simplifying light: photons, wave-particle duality and the Observer Effect Light is one of those few topics where physicists have to say, ‘We don’t yet know why it is the way it is, we just know that it is that way.’ Let’s start simple. Question 1: What is light? When we think of light, we automatically think of visible light- what we can see with our eyes. But that is only 0.0035% of the total light, or electromagnetic, spectrum. The rest of the spectrum includes non-visible light, such as infrared radiation (what we feel as heat), x-rays (what the medical field’s X-ray machine uses to capture images of bones) or ultraviolet radiation (what causes sunburn). Every kind of light is made up of photons. They are tiny little pockets of energy that travel across space at 3 x 10 8 meters/second at different wavelengths and frequencies. Imagine someone tosses you a tennis ball, but instead of it travelling straight towards you, it oscillates up and down in a wave pattern as it travels. If you take a measurement from peak to peak, this distance is called a wavelength. The tennis ball can move up and down in the wave pattern at different speeds. This speed is called the frequency. Photons can travel at different wavelengths and different frequencies depending on where it originated. The unique wavelength and frequency pair of each photon determines what kind of light it is- where it falls on the electromagnetic spectrum. For example, photons with much shorter wavelengths and therefore much higher frequencies fall towards the right-hand side of the spectrum and are likely gamma-rays or x-rays. On the other hand, photons with much longer wavelengths and much lower frequencies are on the left-hand side, meaning the photons are probably radio waves or microwaves. So far, so good. All of this makes sense, and physicists are fairly confident in this information. So, what’s the problem? Question 2: Why is light so problematic? The trouble with light is its behaviour. Remember those little pockets of energy that move up and down in a wave pattern? Well, that’s not exactly what happens. Light has a property that physicists call ‘wave-particle duality’, which is a fancy term for meaning that sometimes light behaves like a particle (photons) and other times it behaves like a wave. When it behaves as a wave, we get the electromagnetic spectrum. As mentioned above, the wave can have different peak-to-peak lengths and travelling speeds that we read as different types of light across the spectrum. But when the photon behaves as a particle, we get this tiny pocket of energy rocketing across the cosmos. It is the fastest thing in the known universe. To understand the difference a little bit better, imagine you put the tennis ball in one of those pitching machines used for baseball players to practice their swing. It shoots the ball straight out of the front in a direct line and incredibly fast. This is light acting like a photon particle. Now, imagine you and a friend have a rope and each of you are holding on to either end. Your friend starts swinging their end up and down creating waves that travel down the rope towards you. The faster your friend swings their end, the faster the waves travel and the smaller the peak-to-peak distances (wavelengths) of the waves get, and vice versa if your friend slowly swings their end. This is light acting like a wave. The tricky bit is that physicists don’t know why the same pocket of energy can act like a photon particle in one instance, yet like a wave in another! The famous Double-Slit Experiment performed by Thomas Young in 1801 demonstrated this behaviour. Since then, the physics sub-field of quantum mechanics has developed and physicists now think that this behaviour is because of what they call the ‘Observer Effect’, which means that particles behave differently depending on whether or not they are observed. How does the particle know when it is being observed? Well, that is still a mystery to all. Written by Amber Elinsky Related articles: Laser Interferometric Gravitational-wave Observatory (LIGO) / Dark Energy Spectroscopic Instrument (DESI) REFERENCES Wavelength/Frequency Image ref: BYJU’s educational tech company Electromagnetic Image ref: Space.com Baclawski, Kenneth. (2018). The Observer Effect. 83-89. 10.1109/COGSIMA.2018.8423983. Project Gallery

In some cases, the exact cause of vertigo remains unidentified, highlighting the complexity of diagnosis Facebook X (Twitter) WhatsApp LinkedIn Pinterest Copy link Vertigo Last updated: 25/08/26, 13:59 Published: 03/07/25, 08:00 In some cases, the exact cause of vertigo remains unidentified, highlighting the complexity of diagnosis Vertigo is a symptom characterised by the sensation of spinning or movement, affecting either the individual or their surroundings. Unlike dizziness, which involves a floating sensation, or imbalance, which reflects unsteadiness, vertigo conveys a distinct sense of motion. While it is not a condition in itself, vertigo often indicates an underlying issue and can range from mild to debilitating, significantly impairing balance and daily activities. Physiology of vertigo Physiologically, vertigo is primarily linked to the inner ear and the vestibular system, which is responsible for maintaining balance and spatial orientation. The vestibular apparatus consists of semicircular canals and otolith organs, which detect angular and linear movements, respectively. Dysfunction in these structures, or their neural pathways to the brainstem and cerebellum, can disrupt normal sensory input, causing vertigo. Symptoms ( Figure 1 ) may include a spinning sensation, nausea, vomiting, nystagmus (involuntary eye movements), sweating, and difficulty with balance. Triggers vary widely and may include head movements, changes in position, or even psychological stress. The underlying causes can be peripheral, such as inner ear disorders, or central, involving the brain or central nervous system. Causes and prevalence Vertigo is particularly common among middle-aged and older adults, where it presents a considerable risk of falls and associated injuries. This demographic is especially vulnerable due to age-related changes in the vestibular system, such as a decline in vestibular hair cells and neurons, as well as alterations in central pathways. Vestibular disorders are among the most frequent causes of vertigo episodes in the elderly, often contributing to a cycle of psychological distress and physical limitation. Anxiety and depressive syndromes further exacerbate this cycle by increasing fear of attacks and falls, ultimately limiting daily activities and lowering perceived quality of life. Benign Paroxysmal Positional Vertigo (BPPV) is the most common cause of vertigo and is featured in multiple studies within the literature ( Figure 2 ). BPPV is typically triggered by changes in head position, leading to brief episodes of intense vertigo. Despite its prevalence, management can be challenging due to the nonspecific nature of symptoms and the diverse underlying causes. Recent research has also identified a strong association between vitamin D deficiency and recurrent BPPV, as vitamin D plays an important role in calcium metabolism and the maintenance of the calcium crystals (otoconia) within the inner ear. In some patients, correcting vitamin D deficiency may help reduce the risk of recurrence. Other common vestibular disorders include labyrinthitis and vestibular neuritis, which are usually caused by viral infections such as the common cold or influenza. These conditions result in inflammation of the inner ear or vestibular nerve and can cause sudden, severe vertigo lasting several days, often accompanied by nausea, vomiting, and imbalance. Vestibular migraine is another increasingly recognised cause of recurrent vertigo and may occur with or without a typical migraine headache, making diagnosis challenging. The COVID-19 pandemic has also highlighted Long COVID (Post-COVID Condition) as an emerging cause of persistent dizziness and vertigo. Some individuals continue to experience balance disturbances and vestibular symptoms for weeks or months following their initial infection, contributing to ongoing functional impairment. Polypharmacy, or the use of multiple medications, has also emerged as a significant factor in vertigo among older adults. Prescriptions involving several drugs, particularly antihypertensives and sedative hypnotics, have been linked to an increased likelihood of vertigo. Careful assessment of medication interactions and side effects during medical consultations is therefore essential. Metabolic disorders, such as diabetes and hypoglycaemia, also contribute to vertigo in some individuals. Although the majority of vertigo cases originate from disorders of the inner ear, neurological conditions should also be considered. Stroke and other central nervous system disorders account for an estimated 10–20% of vertigo presentations in acute care settings and are more likely when vertigo is accompanied by symptoms such as slurred speech, facial weakness, numbness, double vision, severe headache, or difficulty walking. These features require urgent medical assessment to exclude a potentially life-threatening cause. However, in a proportion of cases, the exact cause of vertigo remains unidentified, highlighting the complexity of diagnosis and the importance of a comprehensive clinical assessment. Conclusion As one of the most common and disabling symptoms in the elderly, vertigo requires comprehensive and individualised care. Understanding its underlying physiological mechanisms, as well as recognising the multifactorial influences such as medication use, psychological health, and metabolic disorders, is essential for effective management. By adopting an integrated approach that prioritises accurate diagnosis and targeted interventions, clinicians can improve both symptom control and overall quality of life for individuals affected by vertigo. Further research is needed to enhance treatment strategies and address the remaining gaps in knowledge. Written by Maria Z Kahloon Project Gallery

Nanogels are tiny, water swollen polymer networks and encapsulate therapeutic agents Facebook X (Twitter) WhatsApp LinkedIn Pinterest Copy link Nanogels: the future of smart drug delivery Last updated: 17/07/25, 11:54 Published: 17/07/25, 08:00 Nanogels are tiny, water swollen polymer networks and encapsulate therapeutic agents Nanomedicine is a rapidly advancing field, with nanogels emerging as promising innovations for drug delivery applications. Nanogels are soft nanoscale hydrogels that are transforming how we deliver drugs and treat diseases. Whilst hydrogels themselves have long been used in biomedical applications such as tissue engineering and wound healing, their relatively larger sizes (above 100 micrometres) limits their ability to interact with cells and cross biological barriers. Nanogels, however, are thousands of times smaller, and offer unique advantages as a result. What are nanogels? Nanogels are tiny, water swollen polymer networks and are made up of crosslinked polymer chains to form a 3D matrix. Nanogels can encapsulate therapeutic agents inside their porous core shell structure. This swelling allowing nanogels to carry payloads, such as drugs, proteins, nucleic acids and these cargo materials are protected from degradation in the body whilst enabling controlled and targeted delivery. Due to their small sizes, nanogels can penetrate tissues and even enter cells, which overcomes the limitations faced with hydrogels. The surface of nanogels can also be engineered for specificity, to allow for precise targeting of drugs to receptors on diseased cells or inflamed tissues. Advantages over other nanocarriers Compared to liposomes and polymeric micelles, nanogels have a larger inner surface, which means they can carry more payload. The higher loading capacity improves the therapeutic efficiency whilst reducing the risks of side effects cause by off-target drug release. Nanogels also undergo the enhanced permeability and retention (EPR) effect - a phenomenon where the nanoparticles naturally accumulate in tumour or inflamed tissues due to leaky blood vessel, and as a result this improves drug delivery to targeted disease sites. Stimuli responsive ‘smart’ nanogels A key feature of nanogels is their stimuli responsiveness, or ability to act as ‘smart’ materials. The nanogels can be designed to respond to environmental triggers such as changes in pH, temperature, light, redox conditions, pressure and more. This responsiveness enables controlled release of drugs exactly when and where they are needed12. For example, thermoresponsive nanogels can change their structure at body temperature or when exposed to localised heating, making them ideal for applications like wound healing and cancer therapy. This controlled release prevents premature drug leakage, reduces systemic toxicity and overall improves the precision of the treatment. The future of nanogels in medicine Nanogels have huge potential as customisable drug delivery systems to target specific disease systems. They are biocompatible, stable, and have high drug loading capacities and are stimuli responsive; these properties combined make them a powerful tool in applications such as targeted drug delivery and gene therapy. As nanomedicine research progresses, nanogels are set to revolutionise healthcare with smarter, safer and more targeted therapies. Written by Saanchi Agarwal Related articles: Nanomedicine / Nanoparticles and diabetes treatment / Nanoparticles and health / Nanocarriers / Silicon hydrogel REFERENCES L. Blagojevic and N. Kamaly, Nanogels: A chemically versatile drug delivery platform, Nano Today, 2025, 61, 102645. F. Carton, M. Rizzi, E. Canciani, G. Sieve, D. Di Francesco, S. Casarella, L. Di Nunno and F. Boccafoschi, Use of Hydrogels in Regenerative Medicine: Focus on Mechanical Properties, Int. J. Mol. Sci. , 2024, 25 , 11426. N. Rabiee, S. Hajebi, M. Bagherzadeh, S. Ahmadi, M. Rabiee, H. Roghani-Mamaqani, M. Tahriri, L. Tayebi and M. R. Hamblin, Stimulus-Responsive Polymeric Nanogels as Smart Drug Delivery Systems, Acta Biomater. , 2019, 92 , 1–18. N. Rabiee, S. Hajebi, M. Bagherzadeh, S. Ahmadi, M. Rabiee, H. Roghani-Mamaqani, M. Tahriri, L. Tayebi and M. R. Hamblin, Stimulus-Responsive Polymeric Nanogels as Smart Drug Delivery Systems, Acta Biomater. , 2019, 92 , 1–18. A. Vashist, G. P. Alvarez, V. A. Camargo, A. D. Raymond, A. Y. Arias, N. Kolishetti, A. Vashist, P. Manickam, S. Aggarwal and M. Nair, Recent advances in nanogels for drug delivery and biomedical applications, Biomater. Sci. , 2024, 12 , 6006–6018. K. S. Soni, S. S. Desale and T. K. Bronich, Nanogels: an overview of properties, biomedical applications and obstacles to clinical translation, J. Control. Release Off. J. Control. Release Soc. , 2016, 240 , 109–126. A. Bordat, T. Boissenot, J. Nicolas and N. Tsapis, Thermoresponsive polymer nanocarriers for biomedical applications, Adv. Drug Deliv. Rev. , 2019, 138 , 167–192. K. S. Soni, S. S. Desale and T. K. Bronich, Nanogels: an overview of properties, biomedical applications and obstacles to clinical translation, J. Control. Release Off. J. Control. Release Soc. , 2016, 240 , 109–126. T. Alejo, L. Uson, G. Landa, M. Prieto, C. Yus Argón, S. Garcia-Salinas, R. de Miguel, A. Rodríguez-Largo, S. Irusta, V. Sebastian, G. Mendoza and M. Arruebo, Nanogels with High Loading of Anesthetic Nanocrystals for Extended Duration of Sciatic Nerve Block, ACS Appl. Mater. Interfaces , 2021, 13 , 17220–17235. S. V. Vinogradov, Nanogels in The Race for Drug Delivery, Nanomed. , 2010, 5 , 165–168. Project Gallery

Exploring the microscopic world of molecules Facebook X (Twitter) WhatsApp LinkedIn Pinterest Copy link Quantum Chemistry Last updated: 05/02/26, 10:12 Published: 06/02/25, 08:00 Exploring the microscopic world of molecules Quantum chemistry provides a glimpse into the strange and fascinating world of molecules and atoms, where the principles of traditional chemistry and physics no longer apply. While classical chemistry can explain molecular interactions and bonding, it cannot fully account for particles' unusual, frequently contradictory behaviour at the atomic and subatomic levels. Quantum mechanics provides scientists with a powerful framework for understanding the complicated behaviour of electrons and nuclei in molecules. The basics of quantum chemistry The notion of wave-particle duality, which states that particles, such as electrons, act not just like objects with mass but also like waves, is central to quantum chemistry. Because the exact position and momentum of an electron cannot be known at the same time (according to the Heisenberg Uncertainty Principle), probability distributions are used to describe electrons rather than accurate orbits. These distributions are represented by mathematical functions known as wave functions, which describe the probability of finding an electron in a specific location surrounding the nucleus. This fundamentally affects our understanding of chemical bonding. Instead of conceiving a bond as a solid connection between two atoms, quantum chemistry defines it as the overlap of electron wave functions, which can result in a variety of molecular topologies depending on their energy levels. Quantum mechanics and bonding theories Quantum mechanics has fundamentally altered our knowledge of chemical bonding. The classic Lewis structure model, which explains bonding as the sharing or transfer of electrons, is effective for simple molecules but fails to convey the complexities of real-world interactions. In contrast, quantum chemistry introduces the concept of molecular orbitals. In molecular orbital theory, electrons are not limited to individual atoms but can spread across a molecule in molecular orbitals, which are combinations of atomic orbitals from the participating atoms. These molecular orbitals provide a more detailed explanation for bonding, especially in compounds that do not match simple bonding models, such as delocalised systems like benzene or metals. For example, quantum chemistry explains why oxygen is paramagnetic (it possesses unpaired electrons), a characteristic that classical bonding theories cannot explain. Quantum chemistry and quantum computing One of the most interesting frontiers in quantum chemistry is its application to the development of quantum computers. Traditional computers, despite their enormous processing power, struggle to model the complicated behaviour of molecules, particularly large ones. This is because simulating molecules at the quantum level necessitates tracking all conceivable interactions between electrons and nuclei, which can quickly become computationally challenging. Quantum computers use fundamentally different ideas. They employ qubits, which, unlike classical bits, can exist in a state of both 0 and 1. This enables quantum computers to execute several calculations concurrently and manage the complexity of molecular systems considerably more effectively. This could lead to advancements in quantum chemistry, such as drug discovery, where precisely modelling molecular interactions is critical. Instead of depending on trial and error, scientists may utilise quantum computers to model how possible pharmaceuticals interact with biological molecules at the atomic level, thereby speeding up the creation of novel therapies. Similarly, quantum chemistry could help in the development of novel materials with desirable qualities, such as stronger alloys and more efficient energy storage devices. Why quantum chemistry matters The consequences of quantum chemistry go well beyond the lab. Understanding molecular behaviour at its most fundamental level allows us to create new technologies and materials that have an impact on everyday life. Nanotechnology, for example, relies largely on quantum principles to generate innovative materials with applications in medicine, electronics, and clean energy. Catalysis, the technique of speeding up reactions, also benefits from quantum chemistry insights, making industrial operations more efficient, such as cleaner fuel generation and more effective environmental remediation. Furthermore, quantum chemistry provides insights into biological processes. Enzymes, the proteins that catalyse processes in living organisms, work with a precision that frequently defies standard chemistry. Tunnelling, quantum phenomena in which particles slip past energy barriers, helps to explain these extraordinarily efficient biological processes. In brief, quantum chemistry provides the fundamental understanding required to push the limits of chemistry and physics by exposing how molecules interact and react in ways that traditional theories cannot fully explain. Quantum chemistry has the potential to radically alter our understanding of the microscopic world, whether through theoretical models, practical applications, or future technology advancements. Written by Laura K Related articles: Quantum computing / Topology / Computational organic chemistry Project Gallery