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Biological Aging

All articles tagged with #biological aging

Transplanted Hearts Biologically Age or De-age to Match Recipients, Study Finds
science6 days ago

Transplanted Hearts Biologically Age or De-age to Match Recipients, Study Finds

A new preprint study led by Jesse Poganik of Harvard Medical School suggests that transplanted hearts adopt the biological age of their new recipients rather than retaining the donor’s age. In mouse models and human biopsy data, older hearts placed in younger bodies showed signs of rejuvenation, while younger hearts in older bodies aged faster. This finding challenges current donor age limits and could expand the pool of available organs for transplant patients.

via ScienceAlert|
#biological-aging#epigenetics#harvard-medical-school
AI 'Speech Clock' Links Vocal Patterns to Biological Aging and Dementia Risk
health-and-technology7 days ago

AI 'Speech Clock' Links Vocal Patterns to Biological Aging and Dementia Risk

A new AI tool called a 'speech clock' can estimate a person's biological age and dementia risk by analyzing voice recordings. Published in Science Advances, the study found that discrepancies between chronological age and 'speech age' correlate with brain atrophy, DNA methylation, and Alzheimer's biomarkers. Researchers suggest this low-cost method could eventually replace expensive medical tests for monitoring cognitive decline.

via Live Science|
#artificial-intelligence#biological-aging#dementia
Transplanted Hearts Adopt Host’s Biological Age, Challenging Donor Age Limits
health11 days ago

Transplanted Hearts Adopt Host’s Biological Age, Challenging Donor Age Limits

A new preprint study indicates that transplanted hearts rapidly adjust their biological age to match the recipient’s body, rather than retaining the donor’s age. This suggests that older donor hearts may be viable for younger recipients, potentially expanding the organ donor pool. The findings, based on mouse models and human biopsy data, show that the host’s systemic environment dictates the organ’s epigenetic aging markers, challenging current guidelines that prioritize younger donors.

via Nature|
#biological-aging#cardiology#epigenetics
Dietary Balance, Not Restriction, May Reverse Biological Age in Older Adults
health13 days ago

Dietary Balance, Not Restriction, May Reverse Biological Age in Older Adults

A four-week trial at the University of Sydney found that shifting to an omnivorous, high-carbohydrate, low-fat diet reduced biological age in adults aged 65–75. This aligns with a larger German study showing that various healthy dietary patterns, rather than a single 'perfect' diet, are linked to slower aging through shared biological pathways.

via BBC Science Focus Magazine|
#biological-aging#dietary-quality#epigenetics
health-and-science15 days ago

Vitamin C May Counteract 'Ferro-Aging' by Blocking Iron-Driven Cellular Decay

A 2026 study in Cell Metabolism identifies 'ferro-aging' as a key driver of biological decline, caused by gradual iron accumulation in tissues that damages cell membranes. Researchers found that vitamin C directly inhibits the enzyme ACSL4, which drives this process. In a 40-month trial, older monkeys given vitamin C showed reduced ferro-aging markers, improved organ health, and reversed biological age clocks. While ferro-aging differs from rapid cell death (ferroptosis), it causes slow, cumulative damage to high-energy organs like the heart, liver, and brain. The findings suggest vitamin C supplementation may be a low-cost, accessible strategy to mitigate age-related cellular wear, though more human trials are needed.

via MindBodyGreen|
#biological-aging#cell-metabolism#ferro-aging
AI-designed drug hints at reversing aging signals in IPF patients
science27 days ago

AI-designed drug hints at reversing aging signals in IPF patients

In a small 12-week study of rentosertib for idiopathic pulmonary fibrosis, six independent aging clocks all indicated the patients' blood appeared biologically younger, with four-week reductions of about 2.7–3.5 years on some clocks, but the findings are limited by the small sample size and potential disease-improvement effects, so they do not prove anti-aging effects and require larger, longer trials.

via ScienceAlert|
#aging-clocks#biological-aging#ipf
Right-Sized Sleep Linked to Slower Biological Aging Across Organs
health-and-medicine1 month ago

Right-Sized Sleep Linked to Slower Biological Aging Across Organs

A large study analyzing 23 organ-specific aging clocks from about half a million UK Biobank participants finds a U-shaped relationship between sleep duration and biological aging: both short (<6 hours) and long (>8 hours) sleep are associated with faster aging across the brain, heart, lungs, and other organs, while the healthiest aging pattern occurs with 6.4–7.8 hours of sleep per night. Short sleep also aligns with depressive symptoms, obesity, diabetes, hypertension, heart disease, COPD, asthma, and digestive disorders. The study emphasizes associations rather than causation and suggests different biological pathways for short versus long sleep related to late-life depression. The organ-specific aging clocks could help tailor sleep-related interventions in the future.

via Science Daily|
#aging#biological-aging#health-and-medicine
Younger Generations Show Faster Biological Aging Linked to Early Cancer Risk
health3 months ago

Younger Generations Show Faster Biological Aging Linked to Early Cancer Risk

A large study of 154k UK Biobank and 10k All of Us participants finds that newer birth cohorts show faster biological aging, and greater aging is tied to an 8% higher risk of early-onset solid cancers, rising to 15% for the oldest-aging individuals; immune and fat tissue aging also correlate with specific cancers, pointing to aging-biomarker tests for personalized prevention.

via SciTechDaily|
#aging-biomarkers#biological-aging#cancer-risk
Younger Generations Biologically Older, Linked to Early-Onset Cancer Risk
health3 months ago

Younger Generations Biologically Older, Linked to Early-Onset Cancer Risk

New cross-cohort study finds younger birth cohorts are biologically older than earlier generations at the same age, based on PhenoAge from blood biomarkers, and that higher age-gap scores are tied to greater risk of early-onset cancers (lung, digestive system, uterus) even after accounting for smoking, obesity, telomere length, and genetics, suggesting environmental influences on aging and potential for targeted prevention.

via ScienceAlert|
#all-of-us#biological-aging#early-onset-cancer
Biological aging accelerates in younger generations, boosting early-onset cancer risk
health3 months ago

Biological aging accelerates in younger generations, boosting early-onset cancer risk

WashU Medicine-led study finds younger birth cohorts age biologically faster, with systemic and organ-specific aging gaps larger in more recent generations. In UK and US data, the 1990–1999 birth group showed about 92% of one standard deviation higher systemic aging than 1965–1969, linking to an 8% higher risk of early-onset solid cancers; those with the most accelerated aging had a 15% higher risk. Immune-system aging was associated with early-onset lung cancer, and adipose (fat) aging with early-onset colorectal cancer. The findings suggest aging measures could help identify individuals at higher risk for targeted prevention and early detection.

via WashU Medicine|
#biological-aging#early-onset-cancer#health
Goldilocks Sleep Window Tied to Slower Biological Aging
health4 months ago

Goldilocks Sleep Window Tied to Slower Biological Aging

A study of about 500,000 UK Biobank participants finds a U-shaped link between nightly sleep duration and biological aging: roughly 6.4–7.8 hours per night is associated with less aging, while both shorter (<6 hours) and longer (>8 hours) sleep link to faster aging, though the findings are observational and may reflect underlying health differences rather than causation.

via Futurism|
#aging#biological-aging#health
Lifestyle choices can tilt your biological clock
health4 months ago

Lifestyle choices can tilt your biological clock

Harvard Health Publishing explains that aging is partly genetic but largely malleable; anxiety about aging can speed up biological aging via epigenetic changes, and several factors accelerate aging—UV exposure, chronic stress, poor sleep, smoking, inactivity, obesity, excess alcohol, pollution, shift work, and even yo-yo dieting and sensory overload—while slowing aging comes from regular exercise, quality sleep, a plant-forward diet, strong social ties, and a positive outlook.

via Harvard Health|
#aging#biological-aging#epigenetic-aging
Sleep Sweet Spot for Healthy Aging Found in Half‑Million‑Person Study
health4 months ago

Sleep Sweet Spot for Healthy Aging Found in Half‑Million‑Person Study

A UK Biobank analysis of about 500,000 adults links sleep duration to systemic aging. Using 23 biological aging clocks, researchers found a U‑shaped pattern where roughly 6.4–7.8 hours of sleep per night corresponded to the lowest aging signals across organs (brain, liver, lungs, immune system, skin, endocrine system, adipose tissue, pancreas). Sleeping less than six hours or more than eight hours was associated with faster aging in several clocks, though the exact optimal range varied by organ and sex. The team calls this framework the Sleep Chart, underscoring sleep as a broad, modifiable factor in aging rather than a universal prescription.

via ZME Science|
#aging#aging-clocks#biological-aging