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Breakthrough in Gene Therapy Offers Hope for Preserving Memory in Alzheimer’s Patients

Researchers at the University of California San Diego School of Medicine have unveiled a pioneering gene therapy that offers new hope in the fight against Alzheimer’s disease. This innovative treatment could shield the brain from degenerative damage and help preserve cognitive abilities, marking a significant shift in therapeutic strategy. Unlike existing Alzheimer’s medications, which typically target the buildup of toxic protein plaques in the brain, this gene therapy aims to modify the behaviour of brain cells directly—potentially addressing the disease at its biological root rather than merely alleviating its symptoms.

Alzheimer’s disease, a progressive neurological disorder, affects millions globally and is marked by the accumulation of abnormal proteins such as beta-amyloid and tau. These proteins interfere with neuronal communication, eventually causing brain cell death and the decline of cognitive functions like memory, reasoning, and personality. Existing treatments offer only modest symptomatic relief and do not stop the underlying disease process. The newly developed gene therapy diverges from this traditional path by intervening at a cellular level, reprogramming the brain’s cells to function more healthily in the face of disease.

In experiments conducted on mice exhibiting symptoms of Alzheimer’s disease, the research team delivered the gene therapy directly during the symptomatic phase. Remarkably, the treatment preserved the animals’ memory that relies on the hippocampus—a key brain region involved in learning and memory and one of the first areas affected by Alzheimer’s. Furthermore, when comparing the treated Alzheimer ’s-afflicted mice to healthy age-matched controls, researchers observed that the treated group displayed similar gene expression patterns. This finding suggests that the therapy protects against cognitive decline and may restore diseased brain cells to a more normal functional state.

What sets this approach apart is its potential to shift the paradigm from damage control to proper intervention. While much Alzheimer’s research has focused on clearing harmful proteins after they’ve accumulated, often with limited clinical impact, the UC San Diego team’s work underscores the power of targeting gene regulation within neurons. By reprogramming how these cells behave—encouraging resilience and normal function even in the presence of disease pathology—the therapy may offer a fundamentally different, perhaps more effective, way of tackling neurodegeneration.

Of course, as promising as these early findings are, the transition from animal models to human applications remains a complex and critical next step. There are considerable challenges in ensuring gene therapies’ safety, precision, and efficacy in the human brain. Regulatory approval, ethical considerations, and the logistics of delivery mechanisms must all be navigated carefully. However, the robust response observed in the treated mice provides strong justification for advancing the research into clinical testing.

This study represents a growing wave of interest in gene therapies as tools to combat chronic and previously untreatable brain disorders. Suppose future trials in humans yield similar success. In that case, this therapy could one day offer individuals with Alzheimer’s a way not just to delay the loss of memory and function but to reclaim aspects of brain health thought to be irreversibly lost. The potential for such a therapy to change the course of the disease is immense—not only in alleviating suffering but in transforming how we understand and manage neurodegenerative conditions altogether.

More information: Dongsheng Wang et al, Neuron-targeted caveolin-1 overexpression attenuates cognitive loss and pathological transcriptome changes in symptomatic Alzheimer’s disease models, Signal Transduction and Targeted Therapy. DOI: 10.1038/s41392-025-02258-z

Journal information: Signal Transduction and Targeted Therapy Provided by University of California – San Diego

Preventing Falls Before They Happen: The Promise of Early Intervention for Seniors

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As people age, their bodies inevitably change, affecting strength, mobility, and sensory function. Tasks that once seemed effortless become more challenging. Muscle mass tends to diminish, visual acuity declines and joints may become less flexible, all of which contribute to a gradual decrease in stability. This decline results in a startling statistic: nearly one in three individuals over 65 suffer a fall each year. The consequences of these falls are far from trivial. They often lead to broken bones, head injuries, or prolonged immobility, and in some cases, they can be fatal. In the United States alone, the financial toll of treating fall-related injuries amounts to billions of dollars annually. While ageing is unavoidable, falling does not have to be an inevitable consequence of getting older.

Recognising the need for early intervention, Jiaen Wu of Stanford University and his colleagues sought to explore whether balance impairments could be detected before they led to dangerous incidents. “One big challenge is that small balance impairments can go unnoticed until someone actually falls,” Wu explains. “So, we wanted to ask: Can we detect these impairments before someone gets hurt?” Together with collaborators Michael Raitor, Guan Tan, Kristan Staudenmayer, Scott Delp, Karen Liu, and Steven Collins, Wu investigated whether tracking the way people walk—long before any signs of frailty appear—could help forecast an individual’s risk of falling later in life. Their research, recently published in the Journal of Experimental Biology, provides compelling evidence that subtle variations in walking patterns may hold the key to fall prevention.

The researchers recruited ten healthy young adults between 24 and 31 to test their hypothesis. Each participant was fitted with a waist harness, attached to ropes and reflective markers positioned at the body’s front, back, and sides. This configuration enabled a sophisticated array of eleven cameras to record precise movements as each person walked on a treadmill at a steady pace of 1.25 metres per second. The team examined numerous aspects of gait, such as the consistency of foot placement and the degree of lateral movement in the person’s centre of mass. These initial measurements served as a baseline for each individual’s natural walking behaviour under normal, unimpaired conditions.

Next, the researchers introduced simulated impairments that mimicked the challenges associated with ageing. Participants walked again while wearing ankle braces to restrict joint mobility, a mask that limited vision, or pneumatic jets that disrupted their balance with bursts of air. These added hindrances caused noticeable disruptions in walking patterns. Step widths became more erratic, the timing between steps grew less regular, and the predictability of movement decreased. These findings mirrored the kinds of instability often seen in elderly individuals, indicating that visual obstructions or reduced joint function could profoundly affect a person’s ability to walk safely and steadily.

The team analysed the data and found that not all walking metrics were equally valuable for predicting fall risk. Of the six variables measured during normal walking, only three reliably signalled a person’s vulnerability to balance disturbances: variability in step width, irregularity in step timing, and the placement of each foot. Each of these indicators proved to be over 86 per cent effective in predicting whether someone would struggle to maintain balance when impaired. Surprisingly, when the researchers added a recovery test—tugging on the ropes attached to each walker’s harness to simulate a sudden loss of balance—the new data did not significantly enhance the accuracy of fall predictions. “We thought that seeing how people recover from a pull would reveal more about their balance ability,” Wu reflected, “but in this study, the normal walking data was just as informative in most cases.”

Perhaps the most striking insight from the study was that comparing an individual’s gait to their baseline proved far more predictive than comparing it to a group average. This finding suggests that the key to assessing fall risk is personalised, longitudinal monitoring rather than one-off clinical evaluations. Current practice typically involves assessing gait only after mobility issues have already emerged. Wu and his colleagues propose a paradigm shift: by measuring walking patterns earlier in adulthood—when movement is still largely unimpaired—clinicians could identify subtle deviations that indicate future risk. Such an approach could provide critical early warnings, enabling timely interventions that prevent falls before they occur. In doing so, it could reduce healthcare costs and preserve countless older adults’ quality of life and independence.

More information: Jiaen Wu et al, Detecting artificially impaired balance in human locomotion: metrics, perturbation effects and detection thresholds, Journal of Experimental Biology. DOI: 10.1242/jeb.249339

Journal information: Journal of Experimental Biology Provided by The Company of Biologists

Study Finds Connection Between Brain Health and Socioeconomic Standing

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In a landmark international study, researchers have drawn on genetic data from nearly one million individuals to examine the links between socioeconomic status (SES) and brain health. The team analysed how four key indicators — occupation, income, education, and social deprivation — correlate with genetic variation, revealing that a substantial portion of the genetic influences on these traits are shared. Specifically, around 75 per cent of the genetic effects associated with each of the four SES measures overlapped, suggesting the presence of a common genetic factor influencing social and economic positioning. This unified SES signal allowed researchers to assess shared social influences across the individual, household, and broader community.

This genetic factor of SES was studied in a cohort of 947,466 people using a genome-wide association study (GWAS) method. GWAS allows scientists to identify regions statistically associated with particular traits in the human genome. The team identified 554 specific genomic regions tied to SES through this technique. However, it is essential to note that these findings do not suggest that SES is genetically determined in a deterministic sense. Instead, the data reflect patterns in how specific genetic variants may correlate with social outcomes when embedded within broader environmental and societal contexts.

To better understand whether and how SES impacts brain health, the researchers then turned to a separate group of approximately 40,000 individuals who had undergone brain imaging. Their focus was on white matter hyperintensities — small lesions in the brain that increase with age and are linked to poorer thinking skills heightened dementia risk, and general declines in brain function. They found that people with higher SES tended to have fewer white matter hyperintensities, suggesting that socioeconomic advantage may offer some protection against age-related brain changes. This indicates a likely causal relationship in which SES influences neurobiological outcomes, not merely correlates with them.

Despite the genetic associations identified, the study was careful to underscore genetics’s modest role in explaining SES differences. Common genetic variation accounted for only about nine per cent of the variation in socioeconomic status among the study population. The vast majority of social standing, income, and education differences are shaped by environmental factors — including social policies, access to education, systemic inequalities, and even chance events. In this context, genes may set the stage, but the play is directed by the conditions in which people live, learn, and work.

Dr David Hill, lead author and MRC Research Fellow at the University of Edinburgh’s School of Philosophy, Psychology and Language Sciences, emphasised the significance of identifying a shared genetic factor for SES. According to Hill, this composite measure enabled a more comprehensive understanding of the socioeconomic forces that influence brain structure. “By using this common socioeconomic status factor,” he said, “we were able to capture aspects of socioeconomic status shared between the individual, the household, and the area in which one lives. This enabled us to better identify the causal effects of socioeconomic status on brain structure.”

Co-author Dr Charley Xia offered a vital clarification: the findings should not be misconstrued as evidence that brain health is genetically predetermined. “Studies examining traits such as socioeconomic status using genetic data can be easily conflated,” Xia warned. “We have not shown that brain health is genetically determined – rather that through genetic data we were able to identify socioeconomic status as a modifiable environmental influence on brain health in older age.” Overall, the research illustrates the potential of combining genetic and environmental data to understand better how societal inequalities might translate into long-term differences in brain health and cognitive ageing.

More information: David Hill et al, Deciphering the influence of socioeconomic status on brain structure: insights from Mendelian randomization, Molecular Psychiatry. DOI: 10.1038/s41380-025-03047-4

Journal information: Molecular Psychiatry Provided by University of Edinburgh

A Novel Blood Epigenetic Biomarker of Ageing Emphasises Intrinsic Capacity

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An international team of scientists has unveiled a new biological age estimator—a blood-based “epigenetic clock” that measures how well an individual is ageing rather than merely indicating their chronological age. This innovative metric, known as the Intrinsic Capacity Clock (or IC Clock), shifts the focus from chronological age to functional age, assessing a constellation of six vital domains that together constitute what the World Health Organization (WHO) refers to as intrinsic capacity (IC): mobility, cognition, mental health, sensory function (vision and hearing), and vitality, particularly about nutrition.

As outlined in a recent publication in Nature Aging, the IC Clock represents a significant advance in geroscience and healthy longevity. Rather than concentrating on age as a linear trajectory toward decline, this tool emphasises the preservation of function—something older adults consistently rank as more important than survival or disease avoidance. “Maintaining function during the ageing process matters to older adults,” notes Dr David Furman, PhD, the study’s senior author and Associate Professor at the Buck Institute, where he directs the Bioinformatics and Data Science Core. “Function should inform medical care instead of focusing on getting patients to some disease-free state.” Initially proposed by WHO, the concept of intrinsic capacity was formally recognised in 2022 in the International Classification of Diseases (ICD-11), marking a conceptual shift in how ageing-related decline is clinically identified and potentially treated.

The IC Clock is the result of a transatlantic collaboration between researchers at the Buck Institute for Research on Aging in California and the Hospital-University Institute HealthAge in Toulouse, France, in conjunction with the French research organisation INSERM and the Université de Montpellier. This partnership reflects a growing convergence of North American and European efforts to develop tools for enhancing a healthy lifespan. The foundation of the IC Clock lies in data from the INSPIRE-T cohort—a ten-year longitudinal study involving 1,000 participants aged between 20 and 102 years from the region around Toulouse. Over the first four years of data collection, researchers captured extensive information on each individual’s physical and cognitive function, lifestyle, and biological samples, including blood, saliva, urine, and dental plaque, which were collected annually.

What sets the IC Clock apart from earlier models is its basis in DNA methylation—chemical modifications that serve as molecular indicators of gene expression patterns associated with ageing. The research team demonstrated its superior predictive ability by training the IC Clock model on the INSPIRE-T dataset and validating it using data from the long-standing Framingham Heart Study in Massachusetts. Specifically, the IC Clock outperformed first- and second-generation epigenetic clocks in forecasting overall mortality. According to Furman, it is the only ageing clock that currently integrates all known hallmarks of ageing. Moreover, individuals with higher IC Clock scores exhibited better immune performance, lower markers of inflammation, and healthier behaviours, suggesting that this new measure captures core aspects of biological resilience and systemic integrity.

Crucially, the IC Clock is designed to be practical and scalable. Work is underway to develop a dried-blood spot version of the tool, which would allow for assessments without the need for invasive clinical procedures—particularly advantageous in low- and middle-income countries where healthcare infrastructure is often limited. “If we can offer a scalable, affordable molecular-level tool to assess functional decline,” Furman explained, “the IC Clock could help clinicians, researchers, and policymakers better identify at-risk individuals and tailor interventions that promote a longer, healthier life.” By moving beyond organ-specific diagnostics and toward a unified index of bodily function, the IC Clock could transform preventative care and the global discourse on ageing.

Despite the WHO’s recognition of declining intrinsic capacity as a clinical condition, regulatory frameworks in the United States—most notably the Food and Drug Administration (FDA)—have yet to catch up. The classification of ageing as a disease remains controversial, posing a significant barrier to the approval of interventions targeting ageing-related decline. Furman believes that the IC Clock may help resolve this impasse. “We hope the IC Clock will ultimately enable the FDA to approve treatments that would improve health and function in older adults,” he said, suggesting the clock could become a regulatory anchor for future geroprotective therapies.

Looking ahead, the IC Clock will be deployed in the high-profile XPRIZE Healthspan competition—a global challenge backed by $101 million in funding over seven years, aimed at revolutionising how ageing is managed and mitigated. The Buck-Toulouse consortium has already been named a semifinalist in this ambitious effort, which seeks to identify interventions capable of reversing 10 to 20 years of biological ageing in core domains, such as muscle strength, cognitive capacity, and immune function, within a single year, among adults aged 50 to 80. Their proposed hybrid intervention combines daily supplementation with a ketone ester and a personalised, non-pharmacological protocol called ICOPE-INTENSE. This latter regimen integrates tailored components of exercise, cognitive stimulation, dietary optimisation, and social support—all designed to enhance the pillars of intrinsic capacity. The IC Clock will be the primary biomarker throughout the study to monitor and quantify participants’ functional response to the intervention.

The IC Clock’s development marks a compelling shift in how we approach ageing—not as an inevitable march toward frailty and disease, but as a modifiable state that can be measured, monitored, and potentially improved. In highlighting the biological substrates of functional health and offering a scientifically validated tool to assess them, the IC Clock has the potential to inform clinical decisions, guide public health initiatives, and shape regulatory policies on a global scale. Whether it will ultimately usher in a new era of longevity-focused medicine depends on further validation and scalability and on societal willingness to redefine what it means to age well.

More information: David Furman et al, A blood-based epigenetic clock for intrinsic capacity predicts mortality and is associated with clinical, immunological and lifestyle factors, Nature Aging. DOI: 10.1038/s43587-025-00883-5

Journal information: Nature Aging Provided by Buck Institute for Research on Aging

Healthy Eating Linked to Cardiometabolic Gains, Even Without Weight Reduction

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A new study led by researchers at the Harvard T.H. Chan School of Public Health and Ben-Gurion University in Israel has shed light on a striking finding: many people who adopt a healthy diet can gain significant health benefits without losing weight. Published on 5 June in the European Journal of Preventive Cardiology, the research demonstrates that diet quality alone—independent of weight reduction—can bring about meaningful improvements in cardiometabolic markers. Nearly one-third of study participants who improved their diets experienced no measurable weight loss yet showed notable enhancements in various health indicators.

The study confronts a long-held assumption in public health and clinical practice: that weight loss is the central, if not sole, pathway to improved metabolic health. However, the researchers observed that individuals who did not lose weight nonetheless reaped benefits, including increased levels of HDL cholesterol (commonly known as the “good” cholesterol), reduced levels of leptin (a hormone that regulates hunger), and a decrease in visceral fat, which surrounds internal organs and has been linked to heightened disease risk. These changes are considered strong predictors of long-term cardiovascular and metabolic resilience.

“We have been conditioned to equate weight loss with health, and weight loss-resistant individuals are often labelled as failures,” noted lead author Dr Anat Yaskolka Meir, a postdoctoral research fellow in the Department of Epidemiology at Harvard Chan School. “Our findings reframe how we define clinical success. People who do not lose weight can still improve their metabolism and reduce their long-term risk for disease. That’s a message of hope, not failure.” The study promotes a more inclusive and nuanced understanding of what constitutes progress in dietary and health interventions.

The study analysed data from 761 adults in Israel who had abdominal obesity and participated in three major workplace-based dietary intervention trials: DIRECT, CENTRAL, and DIRECT-PLUS. These trials spanned 18 to 24 months and involved structured random assignments to different healthy eating plans, including low-fat, low-carbohydrate, Mediterranean, and green Mediterranean diets. With ongoing support, participants were encouraged to adhere to these regimens, and adherence rates were consistently high. Comprehensive metabolic assessments were conducted at various points to track physiological responses over time.

Among all participants, 36% achieved clinically significant weight loss, defined as losing more than 5% of their initial body weight. Another 36% experienced moderate weight loss, losing up to 5% of their starting weight. The remaining 28% of participants were classified as weight loss-resistant, either losing no weight or gaining some during the study. While weight loss was associated with clear metabolic advantages—each kilogram of weight lost corresponded to measurable improvements in cholesterol, triglycerides, insulin, liver fat, and other biomarkers—the most surprising outcome was that similar benefits emerged among those who did not lose weight.

Indeed, those who maintained their weight still showed elevated HDL cholesterol, lower leptin levels, and reduced visceral fat. These effects were particularly evident among older adults and women, who were likelier to fall into the weight loss-resistant category. Such findings upend conventional narratives that link health improvements solely to body mass reduction. Instead, they suggest that the body can adapt positively to better nutrition even without a corresponding weight change, likely through mechanisms involving hormonal regulation, inflammation reduction, and improved fat distribution.

The research team further delved into the biological underpinnings of these differing responses by utilising advanced omics technologies. Specifically, they identified 12 distinct DNA methylation sites—epigenetic markers influencing gene expression—which strongly predicted long-term weight loss success. This discovery lends credence to the notion that weight loss is not simply a matter of willpower or discipline but may also be governed by biological predispositions. “This isn’t just about motivation—it’s about molecular biology,” said Professor Iris Shai, the study’s senior author and principal investigator of the nutrition trials. “We’re starting to uncover why some people respond better than others, and that knowledge could help personalise future dietary strategies.”

Despite its strengths, the study has a few limitations, most notably the underrepresentation of women, who comprised a smaller portion of the participant pool. As women tended to be more weight loss-resistant, further research on gender-specific responses could provide even more refined insights. The authors recommended that subsequent trials ensure balanced representation to understand better how factors like age, sex, and hormonal status may influence dietary outcomes. The results remain compelling and broadly relevant to clinical and public health audiences.

In conclusion, this study delivers a critical message that may reshape how clinicians and the general public perceive dietary success. It underscores that choosing and adhering to a nutritious diet can bring powerful metabolic benefits—regardless of whether or not weight is lost. Such a perspective offers reassurance to individuals who struggle with weight change despite their best efforts, affirming that their health can improve meaningfully. Most importantly, it invites a shift in focus from the scale to the more profound and often unseen inner workings of the human body in response to quality nutrition.

More information: Anat Yaskolka Meir et al, Individual response to lifestyle interventions: a pooled analysis of three long-term weight loss trials, European Journal of Preventive Cardiology. DOI: 10.1093/eurjpc/zwaf308

Journal information: European Journal of Preventive Cardiology Provided by Harvard T.H. Chan School of Public Health

New Research Links Daily Mango Consumption to Improved Heart and Metabolic Health in Postmenopausal Women

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Each year, around 1.3 million women in the United States transition into menopause—a natural life stage accompanied by significant hormonal shifts that can adversely affect cardiovascular health. This transition is linked to a marked increase in the risk of heart disease, which already affects nearly half of American women. Maintaining heart health during this period is essential because women often live one-third to almost half of their lives in a postmenopausal state. In this context, a recent study published in the Journal of the American Nutrition Association offers encouraging evidence: consuming fresh mangos daily may support key cardiovascular markers in postmenopausal women.

The study, conducted by researchers at the University of California, Davis, involved generally healthy women aged between 50 and 70 years who were classified as having overweight or obesity. Participants were instructed to avoid mangos before the study’s second phase, after which they began consuming 330 grams of fresh mango daily—roughly equivalent to 1.5 cups—divided into morning and evening servings. Over two weeks, participants made three laboratory visits, spaced at least 48 hours apart, during which researchers collected data on body metrics, blood pressure, and cholesterol levels. Baseline measurements were recorded at the first visit, with follow-up testing after mango consumption began in the second and third visits.

Findings from the study revealed striking short-term improvements in cardiovascular health. Just two hours after consuming mangos, participants’ supine systolic blood pressure dropped by an average of 6.3 mmHg, while mean arterial pressure declined by 2.3 mmHg. Over two weeks, mango consumption was associated with a notable decrease in fasting cholesterol levels: total cholesterol dropped by nearly 13 mg/dL, and LDL cholesterol—commonly known as “bad” cholesterol—fell by approximately the same amount. These changes are clinically meaningful, especially given the relatively short intervention window and no other lifestyle modifications were required.

Dr Roberta Holt, Associate Researcher at UC Davis and co-author of the study emphasised the implications of these findings for women facing menopause-related health risks. “Post-menopausal women face distinct metabolic changes that can impact their risk of developing cardiovascular disease,” she stated. “These findings help to identify targeted dietary strategies, like eating fresh mangos daily, to aid this at-risk population and support cardiovascular wellness and potential reductions in chronic disease risk.” Holt’s comments highlight the potential for dietary interventions to offer practical, non-pharmaceutical solutions to long-standing public health challenges.

In a follow-up study involving six participants from the original cohort, researchers explored how mangos might affect glucose metabolism—an equally important aspect of cardiometabolic health. Participants underwent three rounds of glucose testing: the first established baseline values, the second followed mango consumption, and the third involved ingesting 83 grams of white bread. The mango outperformed the white bread by a clear margin. Blood glucose levels rose significantly less after eating mango, and insulin levels spiked and declined rapidly, suggesting a more favourable metabolic response. This evidence supports the idea that mangos, beyond their cardiovascular benefits, may help stabilise blood sugar and reduce insulin strain.

While further research is warranted to confirm long-term effects and to broaden the sample size, the study points to mangos as a simple yet effective dietary tool for promoting health in postmenopausal women. With their rich content of antioxidants, fibre, and naturally occurring bioactive compounds, mangos offer a nutrient-dense option that may complement existing dietary strategies aimed at reducing chronic disease risk. Whether used to support blood pressure, cholesterol, or glucose control, fresh mangos present a delicious and health-promoting addition to the diets of those navigating the physiological changes of menopause.

More information: Roberta Holt et al, Short-Term Cardiometabolic Response to Mango Intake in Postmenopausal Women, Journal of the American Nutrition Association. DOI: 10.1080/27697061.2025.2478937

Journal information: Journal of the American Nutrition Association Provided by Wild Hive

Research reveals impact of obesity on healthcare delivery

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A recent qualitative study has found that older adults living with obesity often feel judged or dismissed by care providers because of their weight, which can lead to a reluctance to seek help. This research, conducted by teams at Anglia Ruskin University (ARU) and the University of West London, draws attention to the social and systemic barriers many older individuals face in accessing appropriate care. The findings indicate that these barriers are physical and deeply emotional, contributing to the neglect of crucial care needs within this population.

The study, published in PLOS One, involved in-depth interviews with 33 older adults and examined their experiences with formal and informal care systems. Participants reported concerns over being negatively perceived due to their weight, often preventing them from requesting help. Some even described interactions with care providers that reinforced feelings of shame or inadequacy. These social pressures, the study notes, act as a powerful deterrent, leaving some individuals to struggle in silence rather than face potential stigma or embarrassment.

Beyond these social concerns, participants also encountered numerous physical obstacles in accessing care. Many reported that standard equipment and facilities were ill-suited to their needs, often lacking in size, stability, or safety features necessary for individuals with higher body weights. For instance, inadequate seating, narrow doorways, or inaccessible bathrooms created daily challenges and increased the risk of injury. These physical limitations, combined with the perception of being unwelcome or burdensome, contributed to deep feelings of isolation and, in some cases, worsened physical and mental health outcomes.

Emotional and psychological effects were also prominent in the participants’ accounts. Many spoke of heightened stress, frustration, and a sense of social discrimination. Several felt like a burden to their families or caregivers, particularly when their needs could not be easily accommodated. In some cases, obesity-related health issues have forced individuals out of employment, leading to financial hardship. Others described a growing sense of helplessness, made worse by a lack of access to hobbies, suitable housing adaptations, or consistent social support. These unmet needs left many participants trapped in an environment that neither understood nor supported their lived experience.

To address these issues, the researchers developed a new framework for understanding the unique care needs of older adults with obesity. This model is designed to help healthcare professionals and policymakers identify specific areas where care systems are failing. By targeting these gaps, the study suggests that more effective, inclusive, and cost-efficient care strategies can be implemented. It advocates for preventative measures, flexible care planning, and improvements to infrastructure, alongside cultural shifts in how obesity is perceived and discussed within the care sector.

Dr Gargi Ghosh, lead author and Senior Lecturer in the School of Nursing and Midwifery at ARU highlighted the urgency of reform. She stressed that as the population ages and obesity rates continue to rise, the consequences of failing to address this issue will only intensify. According to the 2022 Health Survey for England, over a third of adults aged 55 to 74 are now living with obesity. Dr Ghosh called for comprehensive changes, including increased awareness among care professionals, specific training to address weight-related bias, and creating care environments that accommodate all bodies. The study serves as a call to action, urging a shift towards a more compassionate and equitable approach to social care.

More information: Gargi Ghosh et al, A qualitative study to examine hidden care burden for older adults with overweight and obesity in England, PLOS One. DOI: 10.1371/journal.pone.0320253

Journal information: PLOS One Provided by Anglia Ruskin University

New study reveals connection between depression and heightened dementia risk in middle and later life

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A groundbreaking new study has revealed that depression experienced in both midlife and later life is associated with an increased risk of developing dementia. Published in eClinicalMedicine, the research provides some of the most robust evidence that mental health across the lifespan plays a crucial role in determining cognitive outcomes in older age. This study deepens our understanding of the temporal relationship between depression and dementia, helping to clarify whether the age at which depression first appears affects the likelihood of developing cognitive decline.

Jacob Brain and Maha Alshahrani led the research in collaboration between the Institute of Mental Health and the School of Medicine at the University of Nottingham, the University of Adelaide, and the Dementia Centre of Excellence at Curtin University in Australia. Speaking on the findings, Mr Brain stated, “Our study shows that depression is linked to an increased risk of dementia in both midlife and late life. This highlights the importance of recognising and treating depression across the life course, not just for mental health, but also as part of a broader strategy to protect brain health.” He also emphasised the need for public health initiatives to emphasise preventative mental healthcare as a key component of brain health promotion.

Globally, over 57 million people are currently living with dementia, and the number continues to rise as populations age. With no known cure, prevention has become a critical focus of public health. The identification of modifiable risk factors—like depression—has therefore gained prominence in research and policy. Understanding how, when, and why depression might contribute to the onset of dementia could open up new avenues for intervention, especially at earlier stages of life. However, prior research has been inconclusive about whether depression at specific life stages—midlife versus later life—has differential effects on dementia risk.
To address this, the research team conducted an umbrella review, which synthesised findings from existing systematic reviews and meta-analyses, ensuring that only the highest-quality evidence was included. They then went further by reanalysing data from the individual studies that those reviews were based on and adding more recent research that had been excluded from earlier analyses. This approach allowed for a comprehensive, up-to-date assessment of how depression at different life stages is linked to dementia risk, offering far greater specificity than earlier studies.

Their results were striking. Depression in both midlife (typically in one’s 40s or 50s) and late life (from one’s 60s onwards) was found to be significantly associated with a higher likelihood of developing dementia. By separating the analysis according to the timing of depression onset, the study reinforced the overall risk relationship and identified essential differences in how that risk manifests over time. Mr Brain noted that this clarity “helps guide future research, treatment, and prevention strategies” by identifying precisely when interventions could be most effective.

The study also raises the possibility that late-life depression may not only be a risk factor but could, in some cases, serve as an early indicator of dementia. The symptoms of depression and the early stages of cognitive decline can sometimes overlap, making it challenging to distinguish between the two. Nonetheless, by identifying patterns and timing, the researchers offer an essential step towards disentangling these relationships. If late-life depression indeed reflects early neurodegenerative changes, it might serve as a crucial window for early detection and intervention, even before more definitive symptoms of dementia appear.

While the biological mechanisms underlying the depression–dementia link remain complex, the study discusses several plausible pathways. These include chronic inflammation, hypothalamic-pituitary-adrenal (HPA) axis disruptions, vascular damage, neurotrophic factor changes, and neurotransmitter imbalances. There may also be genetic susceptibilities and behavioural factors, such as reduced physical activity or poor sleep, that contribute to the observed associations. Regardless of the exact mechanisms, this research reinforces the need to treat depression not only as a mental health condition but as a potential harbinger of future cognitive decline. In doing so, it calls for integrated mental and brain health strategies that prioritise early diagnosis, sustained support, and equitable access to effective treatment across all ages.

More information: Jacob Brain et al, Temporal dynamics in the association between depression and dementia: an umbrella review and meta-analysis, EClinicalMedicine. DOI: 10.1016/j.eclinm.2025.103266

Journal information: EClinicalMedicine Provided by University of Nottingham

Coffee Consumption Tied to Healthier Ageing in Women

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A recent large-scale longitudinal study has found a promising link between midlife coffee consumption and healthy ageing in women. Conducted over three decades, the research followed nearly 50,000 women from the well-established Nurses’ Health Study and observed that those who regularly drank caffeinated coffee during their middle years were more likely to remain mentally sharp, physically capable, and free from major chronic illnesses well into old age. These findings suggest that the benefits of coffee may extend beyond its well-known energising properties to encompass broader aspects of long-term health and resilience.

The research team, led by Dr Sara Mahdavi, a postdoctoral fellow at the Harvard T.H. Chan School of Public Health and adjunct professor at the University of Toronto, examined participants’ dietary habits starting in 1984. Women aged 45 to 60 reported their caffeine intake via detailed food frequency questionnaires, which included coffee, tea, cola, and decaffeinated coffee. The researchers defined “healthy ageing” as surviving at least 70 while remaining free from 11 major chronic diseases, retaining physical function, and maintaining good cognitive and mental health. Out of the original cohort, 3,706 women ultimately met these stringent criteria for healthy ageing by 2016.

What stood out in the analysis was the association between caffeine from coffee—rather than from other sources—and improved health outcomes. Women who consumed around 315 milligrams of caffeine daily in midlife (equivalent to roughly three small cups of coffee) were likelier to age healthily. The study observed that each additional cup of coffee per day was linked to a 2% to 5% greater likelihood of reaching older age in good health, up to a threshold of five small cups daily. Over 80% of the caffeine consumed by women in the healthy ageing group came from regular coffee, not from tea or soda.

Interestingly, the study did not find any significant associations between healthy ageing and tea or decaffeinated coffee consumption. More strikingly, it revealed that greater consumption of cola—another source of caffeine—was associated with a 20% to 26% lower likelihood of healthy ageing. This suggests that it is not caffeine alone that contributes to positive ageing outcomes but rather something specific to the chemical composition of coffee. Coffee contains a wide array of bioactive compounds, including antioxidants and anti-inflammatory agents, which may work together to affect biological pathways related to ageing, such as oxidative stress, metabolic regulation, and neuroprotection.

Dr Mahdavi emphasised the study’s methodological strengths, including its large sample size, lengthy follow-up period, and repeated assessments of diet and lifestyle every four years. These factors allowed the researchers to adjust for confounding variables such as body mass index, smoking, alcohol consumption, education level, and protein intake. This robust design adds weight to the idea that regular coffee consumption may offer modest yet meaningful support for ageing well, especially when combined with other healthy habits.

Nevertheless, the researchers urge caution in interpreting these results as a prescription for unlimited coffee intake. While moderate coffee consumption appears safe—and even potentially beneficial—for most people, individual tolerance to caffeine varies. Previous research by Dr Mahdavi and her colleagues has demonstrated that genetic differences can affect how people metabolise caffeine, meaning some individuals may experience adverse effects from high consumption. For this reason, the researchers generally recommend limiting intake to around two cups per day unless one knows they can tolerate more. Future studies will explore how specific compounds in coffee interact with genetic and metabolic markers of ageing to understand these personalised effects better.

In conclusion, this study adds a compelling new layer to the growing body of evidence that supports moderate coffee consumption as part of a healthy lifestyle. While the benefits of coffee should not be overstated or viewed as a substitute for more foundational health behaviours—such as physical activity, nutritious eating, and not smoking—the findings do suggest that enjoying a few cups of coffee a day in midlife could offer small but measurable advantages in the pursuit of healthy longevity. Many women’s daily brew may quietly contribute to a more vibrant and independent older age.

More information: Sara Mahdavi et al, CYP1A2 Genetic Variation, Coffee Intake, and Kidney Dysfunction, Nephrology. DOI: 10.1001/jamanetworkopen.2022.47868

Journal information: Nephrology Provided by JAMA Network Open

Stroke survivors may benefit from talking therapy interventions

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Stroke survivors experiencing depression or anxiety are more likely to recover from their psychological symptoms if they engage in talking therapy, according to a new large-scale study conducted by researchers at University College London (UCL).

This landmark study, published in Nature Mental Health, is the first of its kind to investigate outcomes for stroke survivors who accessed NHS Talking Therapies for Anxiety and Depression. Researchers analysed data from all 1.9 million adults who attended the service in England between 2012 and 2019, including 7,597 individuals who had previously experienced a stroke.

Mental health conditions such as depression and anxiety are common after stroke, with over one in three survivors affected. Without appropriate intervention, these symptoms can hinder recovery, both cognitively and physically, and have been linked to increased mortality—previous studies suggest that stroke survivors with depression face a 20–50% greater risk of death in the years following their stroke compared to those without.

However, the UCL study found that the NHS Talking Therapies service—offering free cognitive behavioural therapy (CBT), counselling, and guided self-help—is an effective option for stroke survivors. Among those who completed treatment, 71% showed reliable improvement, meaning their change in symptoms was substantial enough to be unlikely due to chance. Moreover, nearly half (49%) achieved full, reliable recovery from their depression and anxiety symptoms. These figures closely match the UK Government’s recovery target of 50% for the general population, despite the broader understanding that individuals with long-term physical conditions tend to have poorer outcomes in psychological services.

The therapies were delivered in varied formats, including one-on-one sessions, group work, and online options. Depression was assessed using the PHQ-9 questionnaire, which tracks mood-related symptoms such as loss of interest, sleep difficulties, and persistent sadness. Anxiety was measured using the GAD-7 tool, focusing on feelings of worry, restlessness, and tension.

Overall, the findings revealed moderate reductions in depression and functional impairment for stroke survivors—functional issues being defined as challenges in work, home management, social relationships, and leisure activities. Anxiety levels, however, saw an even greater degree of improvement. The timing of therapy emerged as a critical factor: those who began treatment within six months of their stroke were significantly more likely to achieve reliable recovery compared to those who started therapy a year or more after the event. These outcomes held even when adjusted for age, gender, area-based socioeconomic deprivation, and baseline symptom severity.

Lead researcher Dr Jae Won Suh of UCL Psychology & Language Sciences commented: “Our findings strongly reinforce previous small-scale studies indicating that talking therapies are effective in addressing post-stroke depression and anxiety. Furthermore, we found that early intervention makes a notable difference. It is vital that GPs and other healthcare professionals actively screen stroke survivors for mental health symptoms and facilitate prompt referrals to psychological services.”

While the results are promising, the study also highlighted specific disparities. Compared to the general population, stroke survivors undergoing talking therapy were overall less likely to achieve reliable recovery and somewhat more likely to experience symptom deterioration. Yet, once the analysis controlled for other co-existing physical health problems—more prevalent among stroke survivors—these differences largely disappeared.

Co-author Professor Joshua Stott added that this finding points to a need for adaptation within the mental health care system. “Our results suggest that clinicians providing psychological therapies should receive enhanced training to meet the complex needs of individuals with long-term physical conditions,” he explained. “This includes addressing cognitive impairments, sensory deficits, and overlapping medical challenges. By investing in such specialised training, we can significantly improve mental and physical health outcomes for thousands of patients.”

This study underscores the importance of integrating mental health care into the broader rehabilitation pathway for stroke survivors, and it calls attention to the potential for talking therapies to play a central role in recovery. The research offers a strong case for early intervention and for equipping mental health professionals with the tools and training needed to effectively treat those managing both psychological distress and the long-term effects of a significant physical health event.

More information: Jae Won Suh et al, A record-linkage study of post-stroke primary care psychological therapy effectiveness in England, Nature Mental Health. DOI: 10.1038/s44220-025-00429-z

Journal information: Nature Mental Health Provided by University College London

Increased Parkinson’s Risk Observed in Individuals with Autism

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A large-scale Swedish study has found that individuals diagnosed with Autism Spectrum Disorder (ASD) may face a significantly heightened risk of developing Parkinson’s disease earlier in life. Conducted by researchers at the Karolinska Institutet and published in JAMA Neurology, the study analysed registry data from over two million people born in Sweden between 1974 and 1999. Participants were followed from the age of 20 until the end of 2022, enabling the researchers to assess long-term health outcomes, including the potential emergence of early-onset Parkinson’s disease—a neurodegenerative condition known primarily for its impact on movement and motor control.

The investigation sought to explore a possible link between autism and early-onset Parkinson’s, which occurs before the age of 50. Autism, a neurodevelopmental condition affecting communication, social interaction, and behaviour, has not traditionally been associated with Parkinson’s, a disease involving the degeneration of dopamine-producing neurons in the brain. However, this new research found that people with autism were approximately four times more likely to develop Parkinson’s disease than those without an autism diagnosis. Importantly, this increased risk persisted even after adjusting for a range of potential confounding factors, including socioeconomic status, family history of mental illness or Parkinson’s, and other health variables.

Dr Weiyao Yin, the study’s lead author and a researcher at Karolinska’s Department of Medical Epidemiology and Biostatistics, suggested that shared biological mechanisms might underlie both conditions. One leading hypothesis is the involvement of the brain’s dopamine system—a neurotransmitter pathway crucial for both motion control and social behaviour. Since the loss of dopamine-producing neurons characterises Parkinson’s, and prior research has hinted at dopamine dysregulation in autism, the authors propose that the two disorders may be linked through this shared neural substrate. However, Dr Yin cautioned that while the findings are compelling, more research is necessary to clarify the precise mechanisms involved.

The study also took into account the high prevalence of psychiatric conditions such as depression in individuals with autism, many of whom are prescribed antidepressants or antipsychotics. Some of these medications are known to cause Parkinsonian symptoms, potentially confounding the association between autism and Parkinson’s disease. When the researchers adjusted for the use of these drugs, the strength of the association weakened somewhat, but individuals with autism still had double the risk of developing Parkinson’s. This suggests that while psychiatric medication use may contribute to the observed risk, it is unlikely to explain it thoroughly, and underlying biological pathways may still be at play.

Despite the statistically significant findings, the researchers note that early-onset Parkinson’s disease remains rare in the general population and even among people with autism. Moreover, the study cohort had a mean age of just 34 at the end of the follow-up period, meaning that many participants had not yet reached the age at which Parkinson’s is typically diagnosed. As such, the long-term risk trajectory for this population remains uncertain. Future studies will be essential to determine whether the elevated risk continues into older adulthood, where Parkinson’s becomes more prevalent.

The study concludes with a call for greater awareness and continued monitoring of individuals with autism as they age. Dr Sven Sandin, the study’s senior author and a statistician at Karolinska Institutet, emphasised the need for long-term healthcare planning. “This is a vulnerable group,” he said, “with high co-morbidity and significant use of psychotropic medications. Clinicians should be aware of these risks and ensure regular follow-up.” While the research does not suggest imminent concern for most individuals with ASD, it opens an essential line of inquiry into how neurodevelopmental and neurodegenerative disorders might intersect throughout a lifetime.

More information: Weiyao Yin et al, Risk of Parkinson Disease in Individuals With Autism Spectrum Disorder, JAMA Neurology. DOI: 10.1001/jamaneurol.2025.1284

Journal information: JAMA Neurology Provided by Karolinska Institutet

Money Management in Older Adults Falters with Onset of Dementia

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Older adults tend to have a keen awareness of their financial capabilities, which, intriguingly, often improves with age—provided their cognitive health remains intact. New research from Binghamton University, State University of New York, has found that financial self-knowledge tends to become sharper over time, particularly as older individuals accumulate real-life experience managing pensions, insurance, medical costs and other age-related financial responsibilities. However, this trend does not hold for those diagnosed with Alzheimer’s disease, who often lose insight into their decision-making abilities.

The study, led by psychologist Ian McDonough, analysed data from a long-term study involving 2,800 older adults tracked over ten years. Participants were asked to rate how well they believed they could carry out various financial tasks—such as balancing a chequebook, making change, or paying bills—before being tested on these abilities through multiple scenarios. Participants were given a pamphlet advertising gym memberships in one task and asked to calculate the total cost over a decade. The contrast between participants’ self-assessments and their actual performance revealed how well people judge their financial competence.

Results showed that many older adults, especially those in their 60s and 70s who retained good cognitive function, could accurately predict their financial performance. Knowing how well one performs, this metacognitive ability improves with age. “It does seem people get better with time,” McDonough noted. “By the time you get to your 70s, as long as you maintain your cognition decently well, you can predict your financial ability slightly better.” This suggests that life experience is valuable in sharpening one’s financial judgement, particularly after retirement when individuals frequently engage with complex systems like Social Security and healthcare benefits.

However, this growing self-awareness can erode rapidly in those with dementia, particularly Alzheimer’s disease. The study found that individuals with such diagnoses often demonstrate a disconnection between perceived and actual financial ability. They may believe themselves still competent despite clear evidence to the contrary, or they may underestimate their capacity in ways that hinder independence. This disconnect is linked to anosognosia—a condition in which a person is unaware of their cognitive deficits. While anosognosia has been studied regarding memory, this research is among the first to explore its effects on financial self-assessment.

Such findings raise serious concerns about financial vulnerability in individuals with cognitive decline. McDonough emphasises the importance of implementing safeguards early—before awareness diminishes. By involving trusted family members and setting up systems to monitor or co-manage accounts, older adults can maintain independence while protecting against fraud, late payments, or risky decisions. “Because of the personal importance of one’s autonomy in managing finances, working with an older adult with cognitive decline rather than taking away this autonomy is an important but tricky balance to strike,” he explained.

Looking forward, McDonough and his colleagues plan to examine the neural mechanisms underlying financial decision-making by observing brain activity during mathematical tasks. They also explore how digital banking literacy influences financial management in older populations. As the banking landscape becomes increasingly digital, understanding how seniors engage with online systems will be crucial for developing effective interventions. This research sheds light on older adults’ strengths and vulnerabilities. It offers a compelling case for proactive planning and education to preserve financial well-being in the face of cognitive decline.

More information: Ian McDonough et al, Relationship Between Perceived and Objective Financial Abilities Among Older Adults: Results From the Advanced Cognitive Training for Independent and Vital Elderly Cohort, The Gerontologist. DOI: 10.1093/geront/gnaf125

Journal information: The Gerontologist Provided by Binghamton University