Author Archives: support

Women experiencing early menopause may face greater risk of dementia, study suggests

An extensive international study led by the University of Galway has identified a significant link between the timing of menopause and women’s risk of dementia, suggesting that reproductive hormones may play an essential role in protecting brain health. The research indicates that women who enter menopause earlier in life are more likely to develop dementia. In contrast, those who receive hormone replacement therapy (HRT) after menopause appear to face a lower risk. The findings were published in the Journal for Alzheimer’s Disease, underscoring growing interest in how hormones influence long-term cognitive decline.

The study was conducted by researchers from the University of Galway, in collaboration with Boston University, and drew on data from 1,329 cognitively healthy women participating in the renowned Framingham Heart Study. This long-running project, which began in 1948, provides an unusually rich dataset for examining how health, lifestyle, and biology intersect over time. For this particular research, scientists focused on a range of reproductive factors: the age at which a woman had her first period, when she reached menopause, the number of years she spent in her reproductive phase, her oestrogen levels, and whether she had received HRT. These elements were then compared with cognitive test results, MRI scans showing changes in brain structure, and the later risk of dementia.

The results revealed several clear patterns. Women who reached menopause at an earlier age were more likely to experience dementia later on, while women who took post-menopausal HRT had a reduced risk. Additionally, more prolonged exposure to oestrogen over a woman’s lifetime appeared to offer cognitive benefits. Those with more years between the onset of menstruation and menopause performed better on tests assessing memory, reasoning, and visuospatial skills—the ability to interpret and work with spatial information. MRI scans also showed that longer reproductive lifespan and higher oestrogen exposure were linked with greater brain volume in regions that typically shrink during Alzheimer’s disease. This suggests that oestrogen may help preserve brain structure and cognitive function.

Interestingly, the study also found that having more children and higher blood oestrogen levels were associated with stronger cognitive performance. Women with more children showed larger brain volumes in areas commonly affected by Alzheimer’s disease. While the reasons for this are not yet fully understood, pregnancy involves repeated periods of high hormone exposure, which may contribute to long-term brain resilience.

Professor Emer McGrath, Associate Professor at the University of Galway and Consultant Neurologist at Galway University Hospital, emphasised that the findings point to a complex relationship between hormones and brain ageing. Although the results suggest that prolonged exposure to oestrogen may protect cognitive health, she cautioned that further research is needed to confirm the associations and determine the best use of hormonal therapies.

Women account for nearly two-thirds of people living with Alzheimer’s disease, yet scientific understanding of sex-specific risk factors remains limited. While longer life expectancy in women partly explains this imbalance, the study highlights that reproductive biology and hormonal changes may also strongly influence brain health. The research underscores the need to consider women’s hormonal history when exploring dementia risk and developing preventative strategies for cognitive ageing.

More information: Emer McGrath et al, The association between reproductive factors and neurocognitive and neuroimaging markers of brain aging, Journal of Alzheimer’s Disease. DOI: 10.1177/13872877251372430

Journal information: Journal of Alzheimer’s Disease Provided by University of Galway

Research in the Chinese Medical Journal links regular exercise to healthier vascular ageing and extended vitality

Leave a Reply

The rapid growth of the global ageing population has intensified the burden of age-related diseases on public health systems. As physiological functions decline with increasing age, blood vessels and immune defences gradually weaken, impairing tissue repair, slowing metabolism, and leaving the body more vulnerable to chronic disorders such as cardiovascular disease, diabetes, and neurodegenerative conditions. These changes do not simply accompany ageing; they actively accelerate its progression, underscoring the urgent need for strategies that address the biological mechanisms driving physical decline rather than merely treating disease after it appears.

A recent review published on 20 October 2025 in Volume 138, Issue 20 of the Chinese Medical Journal offers new insight into how exercise may serve as a natural therapeutic tool against ageing. Authored by Professor Junjie Xiao and his team from the Cardiac Regeneration and Ageing Lab at Shanghai University’s Institute of Geriatrics, the review highlights the potential of exercise-induced angiogenesis (the formation of new blood vessels) and lymphangiogenesis (the growth of lymphatic vessels) to maintain health and slow age-related deterioration. Dr Xiao emphasises that exercise is more than a lifestyle habit; it is a potent biological stimulus that can trigger regenerative processes essential to vascular health and immune protection.

Angiogenesis ensures adequate oxygen and nutrient delivery to tissues, supports wound healing, and maintains metabolic efficiency. Lymphangiogenesis, by contrast, regulates immune activity, metabolic balance, and the removal of cellular waste. With age, both systems undergo marked decline, leading to insufficient tissue perfusion, accumulation of waste products, chronic inflammation, and impaired immune defence. By stimulating the growth and repair of these networks, exercise offers a means to counteract these fundamental causes of ageing.

The review details the molecular mechanisms behind these benefits. Physical activity upregulates vascular endothelial growth factor (VEGF) and its receptors, stimulates endothelial cell proliferation, and activates transcription factors such as hypoxia-inducible factor-1α (HIF-1α), as well as microRNAs associated with vascular growth. In lymphatic tissues, exercise activates receptors such as VEGFR-3, encouraging lymphatic remodelling. Through these pathways, exercise enhances circulation, boosts metabolic capacity, and supports immune resilience.

Organ-specific effects also make exercise a compelling anti-ageing intervention. In the heart, increased vascular regeneration improves myocardial perfusion and reduces cardiovascular risk. In skeletal muscles, denser vascular networks support strength, endurance, and delay muscle atrophy. In the brain, exercise strengthens neurovascular units, fosters cognitive vitality, and offers protection against diseases like Alzheimer’s. Exercise-induced improvements in vascular and lymphatic function have also been linked to reduced metabolic complications in obesity and diabetes.

Despite its promise, the review identifies ongoing challenges. Researchers still lack clarity regarding how different organs coordinate their vascular responses to exercise, and how factors such as exercise type, intensity, and individual variability influence outcomes. Overexertion may even cause harm, especially in elderly or clinically vulnerable individuals, making personalised exercise prescriptions essential. Integrating exercise with medical therapies remains another important frontier.

The review concludes that exercise should be viewed as a regenerative medical tool capable of stimulating vascular and lymphatic health. Future research must optimise exercise protocols for different populations and evaluate long-term safety. With further development, personalised exercise interventions may offer a safe, accessible, and effective strategy to enhance healthspan, combat disease, and support healthy ageing.

More information: Junjie Xiao et al, Exercise-induced angiogenesis and lymphangiogenesis: A potential therapeutic tool to fight aging and disease, Chinese Medical Journal. DOI: 10.1097/CM9.0000000000003831

Journal information: Chinese Medical Journal and Modeling Provided by Chinese Medical Journals Publishing House Co., Ltd.

New Research Uncovers the Cause Behind Memory Loss of Family and Friends in Alzheimer’s

Leave a Reply

One of the most painful experiences for families of people living with Alzheimer’s is the moment when a loved one no longer recognises them. A new study from the University of Virginia School of Medicine offers a compelling explanation for why this happens and hints at a way to stop it. The research reveals that social memory loss—specifically the ability to remember faces and relationships—may be caused by the deterioration of a protective structure inside the brain, rather than by general memory decline alone.

The study is led by Harald Sontheimer, PhD, along with graduate student Lata Chaunsali. Together, they focused on specialised protective sheaths surrounding neurons known as perineuronal nets. These delicate, mesh-like structures support communication between brain cells and help retain long-term memories. In healthy brains, the nets act as a scaffolding, protecting neural activity essential for recognising the people who matter to us. The UVA team discovered that when these nets break down, the brain becomes unable to store or retrieve social memories. Crucially, this effect is distinct from the ability to recognise objects or remember other kinds of information.

To test their theory, the researchers studied mice whose perineuronal nets were damaged. Those mice could still remember objects but failed to recognise other mice they had interacted with before. This division between object memory and social memory mirrors what clinicians often observe in Alzheimer’s patients: they may recognise belongings and familiar places, yet still forget their spouses, children, or caregivers. The study suggests that it is not all memory that fails at once, but specifically the brain’s system for protecting memories of people.

Even more promising was the team’s attempt to protect these nets. They used a class of drugs called MMP inhibitors, compounds already under study for potential use against cancer and arthritis. When mice were treated early with these inhibitors, the perineuronal nets remained intact, and the mice retained their social memories. This did not reverse damage once it had occurred, but it prevented the loss of recognition in the first place. Such a result points toward preventative treatment strategies that could one day safeguard memory before deterioration begins.

Sontheimer emphasised that identifying a structural change tied to a specific form of memory loss marks a crucial turning point. Chaunsali echoed this, noting that protecting these nets could offer a non-traditional way to prevent Alzheimer’s. What makes their findings particularly significant is that the deterioration they observed appears to be independent of amyloid plaques—the protein deposits long thought to drive the disease. If social memory loss can occur without amyloid involvement, then current theories about Alzheimer’s may need to be re-evaluated.

More research will be needed before these drug candidates can be used safely on people, but the implications are substantial. With Alzheimer’s affecting 55 million people worldwide and numbers rapidly rising, a treatment that protects identity-defining memories could change the course of the disease. Rather than simply slowing decline, future therapies may help preserve the relationships that give life meaning.

More information: Lata Chaunsali et al, Degradation of perineuronal nets in hippocampal CA2 explains the loss of social cognition memory in Alzheimer’s disease, Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association. DOI: 10.1002/alz.70813

Journal information: Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association Provided by University of Virginia Health System

New research links X-chromosome gene to elevated risk of MS and Alzheimer’s in women

Leave a Reply

Scientists at UCLA Health have identified a gene on the X chromosome that fuels inflammation in the female brain, providing a fresh explanation for why women are more frequently affected by neurological conditions such as Alzheimer’s disease and multiple sclerosis. The gene, called Kdm6a, was shown to heighten immune activity within microglia – the brain’s specialised immune cells. Because females possess two X chromosomes rather than one, they receive a more potent dose of this inflammatory signal, which becomes particularly relevant in diseases characterised by age-related neurodegeneration.

The research, published in Science Translational Medicine, demonstrated that disabling Kdm6a in a mouse model of multiple sclerosis significantly reduced both disease severity and the damage visible in brain tissue. When the gene was genetically removed, inflammatory molecules within microglia shifted from an activated state back to a more protective, resting state. The team also used the diabetes drug metformin to reduce production of the protein linked to Kdm6a, producing similar benefits. Notably, these interventions had a meaningful impact only in female mice, suggesting that the double X chromosome dosage plays a central role and that women and men may respond differently to treatments that target this pathway.

According to study lead Dr Rhonda Voskuhl, the findings help clarify why neurological disorders disproportionately affect women and why many experience cognitive “brain fog” during menopause. She explained that women’s immune systems have evolved to strike a balance: X-linked inflammatory activity provides an advantage in combating infections during childbearing years, while oestrogen acts as a natural brake that protects the brain from inflammation-induced damage. When oestrogen levels drop during menopause, the protective balance is disrupted, allowing inflammation to exert more harmful, neurodegenerative effects.

The research points toward possible treatment strategies that restore this equilibrium. Voskuhl suggests that therapies targeting brain-specific oestrogen pathways, alongside drugs that moderate Kdm6a activity, could help shield the ageing female brain from the excess inflammation driven by sex-chromosome biology. By illuminating how genetic and hormonal factors interact, the study opens the door to more personalised approaches to neurological health, recognising that understanding women’s risk means paying close attention not only to hormones but also to the chromosomes that shape immune activity throughout life.

More information: Yuichiro Itoh et al, Deletion of the X-chromosomal gene Kdm6a in microglia of female mice ameliorates neuroinflammation and restores translatome profiles, Science Translational Medicine. DOI: 10.1126/scitranslmed.adq3401

Journal information: Science Translational Medicine Provided by University of California – Los Angeles Health Sciences

Irregular blood pressure behaviour associated with early neurological changes in ageing adults

Leave a Reply

Even when overall blood pressure falls within a healthy range, older adults whose readings fluctuate sharply from one heartbeat to the next may still face a greater risk of brain shrinkage and nerve cell injury. New research from the USC Leonard Davis School of Gerontology suggests that blood pressure instability, rather than high averages alone, can harm the brain and may signal early signs of neurodegeneration. The findings expand the understanding of cardiovascular risk by showing that the moment-to-moment consistency of blood pressure matters as much as long-term control.

Published online on 17 October in the Journal of Alzheimer’s Disease, the study examined a form of short-term variation known as “dynamic instability,” referring to fluctuations occurring over just minutes. Researchers found that these rapid shifts are associated with reduced volume in brain regions responsible for memory and cognition, as well as with blood markers indicating nerve cell damage. According to senior author Daniel Nation, even routine blood pressure readings may mask subtle instability that can place the brain under stress. He notes that such instability appears linked to the same kinds of changes observed early in neurodegenerative conditions such as Alzheimer’s disease.

While high average blood pressure has long been recognised as a significant risk factor for dementia, the study highlights the importance of blood pressure stability. Frequent small rises and falls may strain tiny blood vessels that supply the brain, reducing their ability to maintain steady blood flow. Over time, this stress may weaken neural tissue, suggesting that maintaining stable circulation could be key to protecting cognitive function.

To measure instability, the research team used two indicators. The first, Average Real Variability (ARV), measures the extent to which systolic blood pressure shifts between heartbeats. The second, the Arterial Stiffness Index (ASI), reflects how flexible the artery walls are as they respond to changing pressure. Together, these metrics offer a picture of how blood flow fluctuates over short periods and indicate “blood pressure dynamic instability.” Nation explains that although the cardiovascular system constantly adapts to the body’s needs, this regulation may become less precise with age, resulting in exaggerated swings that burden the brain.

The study involved 105 adults aged 55-89 with no significant neurological disease. During MRI scans, each participant’s blood pressure was recorded beat-by-beat for 7 minutes. Researchers examined how these fluctuations related to brain structure and blood biomarkers associated with neurodegeneration. Individuals with both high ARV and high ASI showed smaller volumes in the hippocampus and entorhinal cortex, regions vital for memory and among the first affected in Alzheimer’s disease. Blood samples from these individuals also revealed higher levels of neurofilament light (NfL), a marker of nerve cell damage. Notably, the associations held even after accounting for age, sex, and average blood pressure, indicating that variability itself may be an independent risk factor.

Lead author Trevor Lohman suggests that focusing solely on lowering average blood pressure may not be enough. Approaches that reduce fluctuations—through exercise, tailored medication timing, or stress reduction—may offer additional protection. Although the study cannot prove causation, it points to new ways to prevent dementia by maintaining steady blood flow. As the link between cardiovascular stability and brain health becomes clearer, protecting the brain may rely not only on lowering blood pressure but on keeping it consistently stable as we age.

More information: Daniel Nation et al, Blood pressure dynamic instability and neurodegeneration in older adults, Journal of Alzheimer’s Disease. DOI: 10.1177/13872877251386443

Journal information: Journal of Alzheimer’s Disease Provided by University of Southern California

Study reveals inherited connection between early cognitive ability and longer parental lifespan

Leave a Reply

Researchers at the University of Edinburgh have found strong genetic evidence linking children’s intelligence to how long their parents live. The study, led by Dr W. David Hill and published in Genomic Psychiatry, is the first to show, at the molecular level, that genes influencing children’s cognitive ability also relate to lifespan. This discovery provides a scientific explanation for a well-known observation in public health: children who perform better on intelligence tests tend to live longer lives.

For decades, researchers have seen that higher childhood intelligence scores are associated with a lower risk of early death. Extensive studies from the UK, Denmark, Israel, and Sweden have shown that children with higher test scores are far more likely to live longer, regardless of their family’s income, later schooling, or social background. However, the biological reason behind this link has remained unclear. Previous findings could not rule out the possibility that poor health in adulthood might lower cognitive scores and reduce lifespan, creating a false association.

To avoid this problem, Hill’s team focused specifically on cognitive data gathered in childhood, before health problems could affect test results. They analysed genetic information from more than 12,000 people who had taken intelligence tests in youth and nearly 390,000 people whose parents’ ages at death were recorded. Using advanced statistical tools, the team measured the extent to which the genetic influences on intelligence and longevity were similar.

The results were striking. The study found a genetic correlation of 0.35 between childhood intelligence and parental lifespan, meaning the two traits share a substantial portion of their genetic basis. The research also confirmed that genes strongly influence both intelligence and longevity. Notably, the analysis showed little evidence of bias from population differences, reinforcing the reliability of the findings.

The reason these shared genes affect both brain function and longevity remains uncertain. One explanation supports the “system integrity” idea: some people may inherit biological systems—such as more efficient cells or stronger immune responses—that naturally support both better thinking skills and longer, healthier lives. Another possibility is that intelligence indirectly supports longevity. Children with higher cognitive ability may grow up to make healthier choices, achieve better education and income, and avoid harmful behaviours, all of which support longer life.

This research opens new opportunities for studying which specific genes support both cognition and health. Understanding these biological pathways could help scientists develop strategies to support healthy ageing or identify those at higher medical risk earlier in life. However, the authors stress that genes are only part of the picture. Lifestyle, access to education, nutrition, and social conditions still profoundly influence lifespan.

The findings also suggest important implications for public health. Supporting and improving children’s cognitive development may offer benefits that extend far beyond academic success. Investing in education and childhood wellbeing may contribute not only to smarter societies, but also to healthier, longer-living populations. While genes cannot be changed, improving childhood environments may work alongside biology to support a longer, healthier life for future generations.

More information: W. David Hill et al, Shared genetic etiology between childhood cognitive function and longevity, Genomic Psychiatry. DOI: 10.61373/gp025l.0098

Journal information: Genomic Psychiatry Provided by Genomic Press

Why political misinformation circulates more often among older generations

Leave a Reply

Older adults’ tendency to share political misinformation has long been a subject of speculation, with many assuming that age-related cognitive decline must be to blame. However, recent research from the University of Colorado Boulder suggests a very different explanation. Rather than struggling to distinguish real news from fabricated stories, adults aged fifty-five and older appear to be more deeply influenced by partisanship. As people age, their political identities often become more entrenched, and this stronger allegiance alters how they judge information that appears in their social media feeds. The issue is therefore less about gullibility and more about the subtle power of ideological loyalty.

The study, conducted with approximately 2,500 participants from the United States and Brazil, sought to uncover the mechanisms underlying this trend. Led by psychology and neuroscience professor Leaf Van Boven, the researchers presented participants with a range of political headlines, some accurate and some thoroughly debunked by fact-checking organisations. These headlines were crafted to appeal to either conservative or liberal viewpoints, depending on the context, and participants were asked how likely they would be to share each one. In an additional experiment, they were also asked to judge whether the content was accurate. What emerged was a consistent pattern: older adults were far more inclined to treat ideologically favourable headlines as precise and to share them, regardless of their actual truthfulness.

This finding challenges earlier research that linked misinformation-sharing among older adults to cognitive limitations or difficulty identifying the sources of online material. While previous studies had shown that people over sixty-five shared significantly more fake news during events such as the 2016 US election, new evidence complicates the picture. A recent meta-analysis of dozens of studies found that older adults often outperform younger adults at spotting fake news, suggesting that the problem’s roots lie elsewhere. The team’s results indicate that strong political identity exerts a powerful effect on information processing, leading older individuals to apply different standards of scrutiny depending on which side benefits from the content.

Notably, the results were consistent across both countries studied, despite their very different political landscapes. Brazil’s multi-party system and the United States’ two-party structure produced nearly identical behavioural patterns, demonstrating that this tendency is not shaped by party systems but by the broader psychological bonds of partisanship. Van Boven notes that older adults did not appear to knowingly share misinformation; instead, they reacted in a highly partisan manner when information aligned with their preferred political narrative, becoming less critical and more trusting without realising it.

The implications of these findings extend beyond individual behaviour into public policy and social media design. Traditional misinformation interventions focus heavily on improving people’s ability to spot false claims or encouraging platforms to label suspicious content. While these strategies remain important, the researchers argue that reducing partisan-driven information sharing is equally essential. Van Boven encourages individuals to reflect on their motivations when posting political material, recognising how ideological commitment can cloud judgement.

Ramos, the study’s co-author, also emphasises the importance of maintaining relationships with people who hold differing political views. Avoiding opposing perspectives—by unfriending, muting, or silencing those who disagree—creates an echo chamber that intensifies partisan reactions and allows misinformation to flourish unchecked. Sustaining cross-ideological friendships and conversations, he argues, is crucial for a functioning democracy and for tempering the biases that lead to misguided sharing behaviour.

More information: Guilherme Ramos et al, The age of misinformation: Older people exhibit greater partisan bias in sharing and evaluating (mis)information accuracy, Journal of Experimental Psychology General. DOI: 10.1037/xge0001868

Journal information: Journal of Experimental Psychology General Provided by University of Colorado at Boulder

Enduring poverty and escalating unsecured debt in early adult years tied to increased likelihood of early mortality

Leave a Reply

Adults who experience poverty-level incomes—whether continuously or intermittently from young adulthood into midlife—face a substantially higher risk of premature death than those who are never poor, according to new research led by the Columbia University Mailman School of Public Health. A companion study by the same team identifies rising unsecured debt, including credit card debt not tied to assets, as a likely pathway linking early financial strain to higher mortality risk. Both studies appear in The Lancet Public Health and offer new insights into the long-term health consequences of economic hardship during the formative adult years.

The researchers analysed data from the National Longitudinal Survey of Youth 1979 (NLSY79), tracking participants’ income between 1985 and 2004, when they were aged twenty-three to forty-two, and then following mortality outcomes through 2019, as participants reached ages fifty-three to sixty-two. This period is still well below average life expectancy for their birth cohorts, making the findings particularly striking. The study showed that individuals who spent more years living in poverty had more than twice the rate of premature mortality compared with those who never experienced poverty. The results emphasise the cumulative and dynamic nature of financial adversity, countering earlier research that relied on single-point income measurements and therefore may have underestimated the impact of recurrent or short-term poverty.

Senior author Adina Zeki Al Hazzouri, PhD, explained that early and mid-adulthood are critical periods in which exposure to financial instability can shape long-term health. She noted that poverty’s fluctuating patterns deserve greater attention, as even intermittent hardship appears to leave a lasting imprint on mortality risk. The authors argue that interventions to reduce poverty during these key life stages—particularly for vulnerable populations—are essential. However, more research is needed to determine which policies most effectively support long-term health.

In the second study, Zeki Al Hazzouri and colleagues examined unsecured debt trajectories among 6,954 NLSY79 participants over the same twenty-year span. They found that individuals whose unsecured debt increased steadily over time faced an eighty-nine per cent higher risk of dying in midlife compared with those whose debt remained consistently low. The researchers highlight that unsecured debt is especially burdensome: it often carries high interest rates, does not contribute to wealth accumulation, and may signal broader resource limitations. As such, it may exert significant stress, making it an essential but often overlooked social determinant of health.

Together, the two studies demonstrate that experiences of poverty and financial strain are potent predictors of premature mortality. They also underscore that economic well-being is not static but shifts over the life course, with specific periods appearing more consequential for health outcomes. By examining long-term patterns rather than single snapshots, the research offers a clearer understanding of how economic disadvantage accumulates and affects physical well-being.

An accompanying commentary by Harvard Medical School and CUNY scholars David Himmelstein and Steffie Woolhandler highlights the observed dose–response relationship: the more years spent in poverty or burdened by unsecured debt, the greater the risk of early death. They argue that these findings may help explain why poverty is particularly damaging to health in the United States, where weaker social and medical supports can amplify its effects. The commentators call for policies that actively prevent and reduce financial hardship, framing such measures as central to improving public health and reducing inequities.

More information: Calvin L Colvin et al, Investigating associations between long-term poverty exposure and premature mortality: evidence from the National Longitudinal Survey of Youth 1979 prospective cohort, The Lancet Public Health. DOI: 10.1016/S2468-2667(25)00227-0

Journal information: The Lancet Public Health Provided by Columbia University’s Mailman School of Public Health

Innovative support programme shown to ease burnout among dementia caregivers

Leave a Reply

Caring for a loved one with dementia is an act grounded in devotion, yet it carries a heavy emotional and physical toll. The familiar reminder that no one can give endlessly without replenishing their own strength rings especially true for the more than nineteen million Americans who support relatives living with Alzheimer’s Disease and related dementias. These caregivers often face prolonged stress, limited assistance, and increasing responsibilities as the condition progresses. As the nation’s population ages, the need for practical, accessible support tools has become more urgent, prompting researchers to explore new ways to ease the burdens placed on families.

Against this backdrop, digital health interventions have begun to demonstrate real promise. A process evaluation led by Kang Shen, a PhD student in health services research at George Mason University’s College of Public Health, presents compelling evidence that user-friendly digital programmes can offer meaningful relief and practical guidance. Her work centres on WECARE 2.0, a culturally tailored digital intervention explicitly designed for dementia caregivers. According to Shen’s analysis, participation in the programme led to notable improvements in users’ mental and physical well-being, showcasing how thoughtfully designed digital tools can help bridge long-standing gaps in caregiver support.

One of the programme’s most striking strengths lies in its intuitive, culturally resonant delivery. Shen highlights that WECARE’s combination of relevant content and an accessible technological platform proved both effective and popular among participants. High satisfaction and strong engagement were reflected in caregivers’ reports of enhanced skills, improved problem-solving, reduced stress, and increased feelings of social support. Several participants noted that the programme’s audio recordings, how-to videos, and flexible access suited their needs, especially for those less comfortable with lengthy written materials. This ease of use reinforced WECARE 2.0’s appeal across age groups, including older adults who might otherwise hesitate to engage with digital resources.

The research, published in Alzheimer’s & Dementia in September 2025, also stands out for its innovative evaluative approach. Rather than relying on a single method, Shen employed a blend of qualitative and quantitative techniques: surveys, interviews, self-reported reviews, and digital engagement metrics. This comprehensive data set provided more profound insight into how caregivers interacted with the content, how often they engaged with various features, and which aspects they found most helpful. Such a multi-layered approach provides far richer insights than traditional evaluations, revealing not only outcomes but also the mechanisms behind them.

A key feature of Shen’s work is the integration of both active and passive measurements. Short surveys captured direct user feedback, while backend usage tracking recorded real-time behaviour. Together, these methods allowed researchers to detect what was working well, what required adjustment, and why. This dynamic perspective enables continuous refinement of digital tools, ensuring that interventions remain relevant and responsive rather than static or outdated. It also sets a valuable precedent for future digital health research, particularly in underserved communities.

Professor Y. Alicia Hong, an expert in digital health interventions, established the foundations of WECARE. Delivered through the widely used social media platform WeChat, WECARE 2.0 provides educational articles, video guides, self-care tips, and avenues for social connection. By meeting caregivers within a familiar digital environment, the programme lowers barriers to participation and fosters a sustained sense of accessibility and support.

Insights from Shen’s evaluation are already being incorporated into the next phase of WECARE’s development to create even more effective and inclusive tools for diverse caregiving communities. Supported by a multidisciplinary team of collaborators across several universities, Shen’s work provides a model for designing culturally grounded, genuinely accessible digital interventions.

In its essence, this research offers more than a single programme: it marks a step forward in reimagining how technology can support families caring for loved ones with dementia. By prioritising usability, cultural resonance, and rigorous evaluation, WECARE 2.0 demonstrates how digital innovation can ease caregivers’ burdens while strengthening their confidence and resilience.

More information: Kang Shen et al, Process evaluation of a digital health intervention for dementia caregivers: Integrating active and passive measurements, Alzheimer’s & Dementia. DOI: 10.1002/alz.70663

Journal information: Alzheimer’s & Dementia Provided by George Mason University

Total daily step count plays a greater role in supporting healthy ageing in older women than stepping frequency

Leave a Reply

New research suggests that taking at least 4000 steps on just one or two days each week is linked with a lower risk of early death and cardiovascular disease in older women. Published in the British Journal of Sports Medicine, the study indicates that even infrequent bouts of moderate activity can offer meaningful protection. Rather than requiring daily adherence to step goals, the findings point towards a more flexible approach that still yields health benefits, which may prove especially helpful for older adults who find it challenging to maintain consistent daily routines.

The study addresses a significant gap in current physical activity guidance. While it is well established that lifelong movement supports healthier ageing, there remains considerable uncertainty about how much activity older adults need to achieve measurable benefits. Step counts in particular remain largely absent from guideline recommendations, despite widespread use of step-tracking devices. To shed light on this, the researchers investigated both the total number of steps accumulated per day and the number of days each week on which older women achieved between 4000 and 7000 steps. This dual focus allowed them to examine whether step volume or the pattern of achieving step goals plays a more decisive role in shaping long-term health outcomes.

Their analysis drew upon data from 13,547 women, with an average age of 71, who wore accelerometers for seven days between 2011 and 2015. None had cardiovascular disease or cancer at the start of the study, and all were followed for nearly eleven years. Over this period, 1765 participants died and 781 developed cardiovascular disease. By linking these outcomes to baseline step data, the researchers identified associations between step habits and later health events.

The results were striking. Older women who reached at least 4000 steps on one or two days each week had a 26 per cent lower risk of death from any cause and a 27 per cent lower risk of cardiovascular death compared with those who did not reach this threshold at all. Achieving 4000 steps on three or more days produced an even greater reduction in overall mortality, rising to 40 per cent, though the cardiovascular benefit did not increase further. Higher step totals—between 5000 and 7000 per day on at least three days—were linked with additional reductions in all-cause mortality, though cardiovascular benefits plateaued. Once the data were adjusted for average daily steps, many of these associations weakened, suggesting that overall step volume is the essential factor.

Although the study cannot prove causation and only one week of activity was measured, the authors emphasise a clear message: it is the amount of movement across the week that seems to matter most, not how often step targets are met. Even accumulating steps in an uneven or “bunched” pattern appears to offer a meaningful protective effect. In practical terms, this means older women may benefit from pursuing activity in whatever rhythm suits their lives—slow and steady or concentrated bursts—strengthening the case for including step-based measures in future physical activity guidelines.

More information: Rikuta Hamaya et al, Association between frequency of meeting daily step thresholds and all-cause mortality and cardiovascular disease in older women, British Journal of Sports Medicine. DOI: 10.1136/bjsports-2025-110311

Journal information: British Journal of Sports Medicine Provided by BMJ Group

Rigid arterial pathways could intensify the initial stages of cognitive decline in later life

Leave a Reply

Findings from the multisite IGNITE clinical trial indicate that arterial stiffness — a condition in which large blood vessels lose their natural elasticity — may heighten the impact of nerve fibre injury in the brains of older adults who are not yet showing signs of cognitive impairment. This relationship is drawing growing attention because it may help clinicians recognise individuals who are more vulnerable to future memory and thinking problems long before symptoms appear. As researchers increasingly investigate how vascular health influences brain ageing, the interplay between stiffened arteries and subtle neurological changes is emerging as a key area of interest.

The study, published in Alzheimer’s & Dementia, followed 570 cognitively unimpaired older adults. It focused on neurofilament light chain (NfL), a blood biomarker that reflects damage to nerve fibres in the brain. Although NfL levels rise naturally with age, unusually elevated levels can signal accelerated neural ageing or increased risk of cognitive decline. By measuring plasma NfL, the researchers aimed to detect biological signs of brain vulnerability that might not yet be evident through behaviour or clinical assessment.

To assess vascular health, the team used carotid–femoral pulse wave velocity, a widely accepted measure of arterial stiffness. Healthy arteries expand and contract with each heartbeat, cushioning pressure and ensuring stable blood flow. Stiff arteries, however, lose this capacity and transmit greater force to the organs they supply. Because the brain relies on exceptionally steady blood circulation, even modest disruptions can gradually contribute to injury. Over time, these changes may influence how effectively the brain processes and stores information.

The results showed that greater arterial stiffness was associated with poorer cognitive performance, particularly in episodic memory, working memory and processing speed. These domains are crucial for daily functioning, and even slight declines can signal broader vulnerabilities. The most striking finding was that individuals with both high arterial stiffness and elevated NfL showed the strongest association with memory difficulties. In this subgroup, higher NfL was associated with significantly worse memory outcomes, suggesting that stiffened arteries may amplify the effects of nerve fibre injury on the brain.

Although these findings highlight a potentially significant interaction, the study’s cross-sectional design does not establish cause and effect. Longitudinal research will be necessary to determine whether improving vascular health — for example, by treating hypertension or high cholesterol — can modify the relationship between nerve fibre damage and cognitive performance. Nonetheless, the results offer a valuable early indication that vascular and neurological factors may work together to influence cognitive ageing.

Several investigators emphasised the broader implications. Lewis A. Lipsitz, MD, noted that healthy brain ageing depends not only on preventing nerve fibre damage, but also on maintaining the condition of the blood vessels that nourish the brain. Lead author Amani M. Norling, PhD, stressed that dual monitoring of NfL and vascular health may help identify individuals at elevated risk. Senior author Kirk Erickson, PhD, added that understanding why some people decline faster than others remains a central challenge in ageing research, and studies like IGNITE bring the field closer to targeted therapies.

For many older adults, early cognitive changes are challenging to detect, yet the groundwork for decline may form long beforehand. This study offers promising evidence that protecting vascular health could play a meaningful role in preserving memory and cognitive function as people age.

More information: Amani M. Norling et al, Arterial stiffness moderates the link between NfL and cognition: The IGNITE study, Alzheimer’s & Dementia. DOI: 10.1002/alz.70554

Journal information: Alzheimer’s & Dementia Provided by Hebrew SeniorLife Hinda and Arthur Marcus Institute for Aging Research

Playing or listening to music in later life tied to sharply lower dementia risk, research shows

Leave a Reply

A new Monash University-led study has found that regularly listening to music after the age of seventy is associated with a striking reduction in dementia risk. Drawing on data from more than 10,800 older adults, the researchers reported that those who consistently listened to music had a thirty-nine per cent lower chance of developing dementia compared with those who rarely or only occasionally engaged with music. The findings suggest that musical activity, even in a passive form, may play a meaningful role in supporting cognitive health later in life.

The research was conducted by honours student Emma Jaffa and Professor Joanne Ryan, who examined the cognitive benefits of both listening to music and playing an instrument. They found that participants who always listened to music experienced the most potent protective effect. Meanwhile, individuals who played an instrument also benefited, showing a 35% reduction in dementia risk. Although the study could not determine causation, the results indicate that both active and passive forms of musical engagement may offer cognitive advantages.

To reach their conclusions, the researchers analysed data from the ASPirin in Reducing Events in the Elderly (ASPREE) study and the ASPREE Longitudinal Study of Older Persons (ALSOP) sub-study. These large-scale projects provide detailed information about the health, habits, and cognitive outcomes of older adults, enabling investigation of how everyday lifestyle behaviours relate to long-term brain health. The team’s findings were published in the International Journal of Geriatric Psychiatry.

One of the most notable outcomes was the clear difference between frequent music listeners and those with limited exposure. Participants who always listened to music not only experienced a lower incidence of dementia but also had a seventeen per cent reduced risk of cognitive impairment. In addition, they scored higher on cognitive assessments, including tests of episodic memory, which involves the recall of everyday events and personal experiences. Participants who regularly listened to and played music showed benefits as well, with a 33% lower risk of dementia and a 22% reduction in cognitive impairment.

Ms Jaffa noted that the results highlight music as a potentially accessible strategy for maintaining cognitive health. Music is widely enjoyed, inexpensive, and easy to incorporate into daily routines, making it an appealing option for older adults seeking ways to support their wellbeing. However, she emphasised that although the findings are promising, more research is needed to determine whether music directly contributes to cognitive protection or correlates with other beneficial lifestyle factors.

The study sits within a broader global context in which ageing populations are placing greater pressures on health systems. As medical advances extend human lifespan, the prevalence of age-related diseases, including dementia, continues to rise. With no cure currently available, prevention and delay of onset are crucial research priorities. Senior author Professor Ryan stressed that brain ageing is shaped not only by genetics and time but also by environmental and lifestyle choices. She noted that activities such as listening to or playing music may therefore support cognitive resilience.

While further work is required to confirm causal pathways, the study offers a hopeful perspective: engaging with music —a simple, universally accessible activity —may help preserve cognitive function and enhance quality of life in later years.

More information: Emma Jaffa et al, What Is the Association Between Music-Related Leisure Activities and Dementia Risk? A Cohort Study, International Journal of Geriatric Psychiatry. DOI: 10.1002/gps.70163

Journal information: International Journal of Geriatric Psychiatry Provided by Monash University