Aging
Study links graying hair and melanoma to stress responses in pigment stem cells
Heather Vogel AI द्वारा उत्पन्न छवि तथ्य-जाँच किया गया
Japanese researchers report that hair graying and melanoma can arise from the same melanocyte stem cells, which take different paths depending on DNA damage and local signals. Published online October 6, 2025 in Nature Cell Biology, the University of Tokyo-led study outlines a protective differentiation program that promotes graying and how carcinogens can subvert it to favor melanoma.
Northwestern study uncovers why superagers retain youthful memories
Researchers at Northwestern University have spent 25 years studying SuperAgers—people over 80 with memories as sharp as those 30 years younger—revealing key brain traits that resist cognitive decline. Their findings, published in a new perspective article, highlight two protective mechanisms against Alzheimer's-related damage and emphasize the role of social connections. The work could lead to new strategies for preventing dementia.
Online brain training tied to decade‑equivalent boost in cholinergic function, McGill trial finds
Heather Vogel तथ्य-जाँच किया गया
A double‑blind McGill University–led clinical trial reports that 10 weeks of BrainHQ exercises increased a PET marker of cholinergic function in healthy older adults by an amount the authors say roughly offsets about a decade of age‑related decline. The peer‑reviewed study used a specialized tracer to confirm the biochemical change.
Scientists reverse brain aging in mice using stem cells
Researchers at Cedars-Sinai have developed young immune cells from human stem cells that reversed signs of aging and Alzheimer's disease in mice. The treatment improved memory and brain structure in the animals. The findings, published in Advanced Science, suggest potential for personalized therapies against cognitive decline.
Vitamin D supplements slow telomere shortening in new study
21 अक्टूबर 2025 17:05Study links perceived control to resolving daily stressors
20 अक्टूबर 2025 00:01Study shows harmful sperm mutations rise with men's age
19 अक्टूबर 2025 00:14Study debunks link between calcium supplements and dementia
16 अक्टूबर 2025 00:30Endurance exercise improves immune function in older adults
15 अक्टूबर 2025 00:30Fatty acid supplementation reverses age-related vision decline in mice
15 अक्टूबर 2025 00:30USC scientists measure brain's microvascular pulses linked to Alzheimer's
04 अक्टूबर 2025 00:35Study questions U-shaped pattern of happiness over lifespan
02 अक्टूबर 2025 01:06Evolution may explain why women outlive men
13 सितंबर 2025 00:06mRNA Therapy Restores Ovarian Function
Study links gum disease to greater white matter changes in the brain
Heather Vogel AI द्वारा उत्पन्न छवि तथ्य-जाँच किया गया
Research published October 22, 2025, in Neurology® Open Access reports that older adults with gum disease had more white matter hyperintensities—a marker of tissue damage—than peers without gum disease, even after accounting for other risks.
Study finds life-expectancy gains slowed after 1939
Heather Vogel तथ्य-जाँच किया गया
An analysis of 23 high‑income countries published in PNAS finds the rapid longevity gains of the early 20th century have slowed markedly for cohorts born after 1939, and none of those cohorts are projected to average 100 years of life.
Sperm from older men carry more genetic mutations
Researchers have confirmed that sperm in older men accumulate genetic mutations over time. This increases the risk of transmitting diseases to offspring. The percentage of sperm with potentially serious mutations rises with age.
Longer continuous walks linked to sharply lower heart risk, study finds
Heather Vogel तथ्य-जाँच किया गया
Walking in bouts of 10–15 minutes or longer was associated with substantially lower cardiovascular risk among adults taking fewer than 8,000 steps a day, with 15‑minute‑plus bouts tied to about a two‑thirds lower risk than very short walks, according to research published in Annals of Internal Medicine.
Lifelong social connections slow biological aging process
Researchers have found that sustained social bonds throughout life can slow cellular aging and reduce inflammation. The study, based on data from over 2,100 adults, shows that cumulative social advantages lead to younger biological profiles. This effect stems from consistent relationships rather than isolated interactions.
One in four older adults regain optimal well-being within three years
A University of Toronto study reveals that nearly one in four adults aged 60 and older who started with poor well-being achieved optimal wellness after three years. Factors like physical activity, good sleep, and emotional support were key to recovery. The research highlights the potential for resilience in later life through lifestyle and social factors.