For how we live.
Among 287 people with REM sleep behaviour disorder followed about four years, 15.7% developed a synucleinopathy. Higher coffee intake was linked to a lower risk of progression.
An Israeli records study of 181,000 adults found people now diagnosed are older and sicker, but start with better glucose and cholesterol, and far more leave the clinic on SGLT2 or GLP-1 drugs.
In a 12-month trial of 89 older adults with vascular cognitive impairment, strength training did not slow whole-brain white-matter lesions overall — but it did in women, and in two specific brain regions.
The first GBD 2023 estimate of heart failure maps not just its size but its causes — and the causes split the world: alcohol in eastern Europe, Chagas disease in Latin America, rheumatic disease in the global south.
Retrospective studies keep finding bilinguals develop dementia symptoms three to four years later than monolinguals. Prospective studies that follow healthy people find no drop in who gets it at all.
A fine tremor everyone has — worsened by caffeine, stress, tiredness or some drugs — is the usual cause. Essential tremor is the commonest tremor disorder; a shake at rest is the one that points elsewhere.
A brief swim of light-headedness on standing is usually orthostatic hypotension: a fall in blood pressure as gravity pulls blood to the legs. It is common, rises with age, and often traces to dehydration or medication.
For most adults who bruise more than they used to, the cause is thinner skin from ageing, sun or steroids, plus the aspirin and anticoagulants many older people take. A few patterns point elsewhere.
Floaters are usually ageing changes in the eye's gel. But among people who suddenly develop floaters and flashes, about 14% turn out to have a retinal tear — which can lead to permanent vision loss if left.
By age 80 most people have a cataract or have had one removed. You can lower some risks, but the antioxidant vitamins tested in a 4,629-person trial did not slow them, and surgery is the only cure.
Topical vitamin C is a real antioxidant that helps skin build collagen. Split-face studies show measurable smoothing, but a systematic review found only seven usable trials, almost all mixing it with other actives.
US POINTER randomised 2,111 at-risk older adults to two lifestyle programmes. The structured version beat the self-guided one on cognition — but by a modest margin, and there was no do-nothing group to compare against.
As blood stem cells age, mutant clones take over. By the eighth decade this shows up in about one person in ten — and it tracks with higher mortality and heart disease.
Finnish cohorts link regular sauna bathing to lower cardiovascular and all-cause mortality, with a dose-response. But these are observational studies, and no randomised trial has tested sauna against death.
Losing the ability to walk is a turning point in later life. In a large randomised trial, structured activity cut the rate of major mobility disability — evidence that movement protects independence, read honestly.
Failing mitochondria are one of ageing's core hallmarks, and human trials of mitochondria-targeted compounds show flickers of benefit — but the strongest endpoints keep coming back null.
Observational studies tie hearing loss to faster mental decline. But the first large randomised trial found no overall benefit from hearing aids over three years — with a signal of help only in higher-risk older adults.
A prominent hypothesis holds that ageing is lost epigenetic information that can be reset. The mouse experiments behind it are striking, but no human study shows resetting the epigenome extends life.
Cellular senescence is a well-evidenced driver of ageing in animals. The first human trials of senolytic drugs that clear these cells are real but tiny, early, and nowhere near proving longer healthy life.
Even frail people in their 80s and 90s roughly doubled their strength in ten weeks of training. But muscle size barely moved — the honest expectation is a big gain in function and a modest one on the scale.
A landmark trial pushed blood pressure hard and cut mild cognitive impairment — but its headline dementia result fell short of significance after the study stopped early. The pooled trial evidence is real, and modest.
Topical retinol is the over-the-counter cousin of prescription tretinoin. In the cleanest test of the pure ingredient, three-times-a-week retinol beat its own vehicle on fine wrinkles and built new collagen — slowly.
Mouse studies claimed one circulating protein reversed ageing of the heart, muscle and brain. A second team found the muscle effect ran the opposite way — and no human trial has ever tested it.
ASPREE randomised 19,114 healthy older adults to low-dose aspirin or placebo. It made no difference to disability-free survival, and modestly raised deaths and major haemorrhage.
A nine-man study found hair fibres thickened from 0.085 to 0.092 mm after 24 weeks of daily massage. The larger dataset was a self-reported survey — run by a hair-loss website.
A large treadmill cohort found the least-fit adults had about five times the death rate of the fittest — a bigger risk than coronary disease, smoking or diabetes. But it measures a state, not a lever.
A harmonised meta-analysis of over a million adults found high sitting time raised mortality — but about 60 to 75 minutes a day of activity erased that risk. Being inactive, not the chair itself, did most of the damage.
In 2,292 older adults, weak quadriceps tracked with higher mortality — but muscle size, measured by CT and DXA, did not. The finding reshaped how sarcopenia is defined and moved the target from bulk to strength.
A widely cited cohort found people with diabetes on metformin outlived matched non-diabetic controls. It fuelled the TAME anti-ageing trial — but the human signal is observational, and TAME is not running.
The idea that anti-ageing advances will soon add more than a year of life for every year that passes is popular in longevity circles. National death records point the other way.
A protein named after a Greek fate slows ageing in mice and sharpens memory in old monkeys. In people the evidence is a gene variant you are born with, not a treatment.
For 70 years the idea that oxidative damage drives ageing justified a supplement industry. Large randomised trials found antioxidant pills do not extend life, and some raise mortality.
Red-light masks and panels promise photorejuvenation without lasers or needles. A randomised trial of 136 volunteers backs the collagen claim — but it is one good study, and 'red light' covers very different devices.
One cohort tied high animal protein in midlife to higher mortality, yet found the opposite after 65. Guidelines urge older adults to eat more, and plant protein looks best. No trial proves a lifespan effect.
Classic B12 deficiency is relatively uncommon, but it clusters: in people over 50 whose absorption fails, in vegans whose intake does, and around metformin, acid-lowering drugs and stomach surgery.
Everyday lapses are a poor guide to trouble. The line that matters is whether memory loss is measurable beyond your age and whether it is starting to affect daily function.
Sugars bond to proteins to form advanced glycation end products that accumulate with age and stiffen tissue. Low-AGE diets nudge metabolic markers, but no trial shows they slow ageing.
Scans confirmed that adults keep heat-producing brown fat, switched on by cold and linked to better metabolic health. Whether you can build enough of it to matter for weight is far less certain.
Adults need about 2.4 micrograms a day, and most meat-eaters get it easily. Real deficiency clusters in older people, whose absorption fails, and in vegans, whose intake does.
Immunosenescence, the age-related decline of immunity, is real: the thymus shrinks and the T-cell repertoire narrows. The proven counter is not a supplement but vaccines engineered to force a response.
The idea that a little stress makes the body stronger is sound biology, and the best-evidenced example is ordinary exercise. Stretched to cold, fasting and antioxidant pills, the human evidence thins fast.
Autophagy is the cell's self-clearing recycling process, and it wanes with age. Fasting, spermidine and rapamycin switch it on in lab animals — whether that extends human life is unproven.
In the one randomised trial to test it, adults who used sunscreen daily showed no detectable increase in skin ageing over 4.5 years — 24% less than those who used it as they pleased.
A Global Burden of Disease 2023 study counts 1,102,794 incident tracheal, bronchus and lung cancers in Asians aged 60 and over in 2023, with ageing populations set to sustain the burden even as rates fall.
Xerosis is a barrier problem, not dirt. Cochrane found moisturisers cut eczema flares 60% and spared steroid use; in care-home residents a twice-daily emollient roughly halved skin tears, on weak evidence.
A Nature study traced stress-driven greying in mice to sympathetic nerves that deplete pigment stem cells. Separate human work shows some grey hairs regain colour.
The rise in chronic, low-grade inflammation with age is genuine, and researchers built a clock from it. The one large trial that lowered inflammation for a hard outcome treated heart disease, not ageing.
Swollen ankles are common with age. Chronic venous disease rises steeply over the years, and a very ordinary culprit is medication: calcium channel blockers caused ankle swelling in 10.7% of users versus 3.2% on placebo.
Eligibility set by exact date of birth created a natural experiment. Vaccinated people had a 20% lower relative risk of dementia over seven years. It is one striking study, and it tested the older live vaccine.
Forgetting a name is not dementia, and a third of people diagnosed with mild cognitive impairment revert to normal. But that diagnosis still carries weight: risk of dementia stays elevated even in those who bounce back.
The DO-HEALTH sub-study is the first randomised evidence that a supplement can nudge DNA-methylation ageing clocks. The effect was tiny, and the parent trial found no benefit on health outcomes that matter.
The signalling that builds muscle in youth appears to speed ageing and cancer. People with lifelong GH deficiency avoid both — and GH given to healthy older adults raises harms without extending life.
Epigenetic clocks estimate a 'biological age' from DNA methylation. A 2022 study found technical noise alone could shift the result by up to 9 years between replicates of the same sample.
The only long randomised trial of calorie restriction in non-obese adults improved cardiometabolic risk and modestly slowed one measure of biological ageing. Participants never hit the 25% target.
Losing a little height with age is expected. But marked loss tracks real risk: men who lost 3 cm or more had 45% higher mortality, and women who lost over 5 cm had roughly 50% higher hip-fracture risk.
Dietary spermidine tracks with markedly lower mortality in one population study. The first year-long randomised trial of a spermidine supplement found no effect on memory.
The Sardinian 'Blue Zone' was a real, carefully validated finding. A separate line of work argues the world's longevity hotspots track missing birth records and old-age poverty — not diet.
Pooled randomised trials show real improvements in skin hydration and elasticity versus placebo, but the effect is moderate, the measures are instrument readings, and the evidence base is shaky.
Balance starts slipping after the mid-50s. In 1,702 adults, those who could not hold a 10-second one-legged stance had 84% higher death risk. Specific exercise, done three times a week, measurably restores it.
Infusing plasma from young donors is sold as rejuvenation. The mouse work suggests diluting old blood may matter more than adding young blood — and regulators warn the paid infusions have no proven benefit.
The dream was 'compression of morbidity' — sickness squeezed into a short window before death. Across 183 countries the healthspan–lifespan gap instead grew to 9.6 years, and to 12.4 in the US.
Five-day fasting cycles improve risk markers and one 'biological age' estimate in small trials. No human study has yet shown the diet prevents disease or extends life.
A large study of energy use across the lifespan found it holds steady from age 20 to 60, once body size is accounted for. The midlife metabolic slump is mostly a myth; the decline comes later.
In 34,485 older adults, each 0.1 m/s of walking speed tracked with better survival. At age 75, predicted 10-year survival ran from 19% to 91% across the range — but speed reflects health, not the reverse.
No pill in the anti-ageing market has mortality data like physical activity. The largest cohorts show most of the benefit arrives at half the recommended dose, and more brings diminishing returns.
A 2013 paper named nine hallmarks of aging; a 2023 update made it twelve. The framework is the field's shared map — but critics argue it describes ageing without explaining it.
Very long life carries real genetic signals — the APOE gene most robustly, FOXO3 in some populations. But pedigree studies put the true heritability of human lifespan well below 10%.
Automatic fall alerts are mostly tested on staged laboratory falls, with real-world validation in older people rare. A 2026 meta-analysis of fall prediction found high specificity but only moderate sensitivity.
Planning ahead makes a patient's end-of-life wishes far more likely to be known and followed, and eases surviving families. What it has not reliably delivered is care that matches stated goals.
The NAD+ precursors sold to slow ageing reliably raise NAD+ and are well tolerated. What the randomised trials do not show is a benefit to muscle, metabolism or how old you are.
Cataract surgery was tied to 29% lower dementia risk in a strong cohort. But the largest hearing-aid trial found no overall effect on cognition. The signal is real; the proof that fixing senses prevents dementia is not.
Frailty has firm diagnostic criteria and predicts falls, hospital stays and death. It is also, unusually, treatable: resistance training raised muscle strength 113% even in nursing-home residents in their late 80s.
Structured counselling for a spouse delayed a patient's nursing-home admission by an estimated 557 days. Other trials cut carer depression sharply, though the effect on institutionalisation is less consistent.
It extends life in yeast, worms and flies, and in mice on a high-fat diet. In people it fails to reliably switch on the enzyme it targets, and higher intake tracks no drop in death, cancer or heart disease.
A secondary analysis of the ELITE hormone-therapy trial found hints that social ties tracked with cognition, but none survived correction for multiple testing.
In a 12-person crossover trial, blue-enriched daytime light with reduced evening blue did not cut time spent awake at night, though it nudged a brainwave marker of sleep.
A landmark trial cut delirium from 15.0% to 9.9% by addressing six ordinary risk factors together. Drugs, including antipsychotics, have not shown the same clear preventive benefit.
A transcriptomic sub-study of the CALERIE calorie-restriction trial links 151 genes to preserved leg strength during weight loss, independent of how much body mass was lost.
The length of your chromosome caps is a noisy population-level marker, not a personal verdict — and genetically longer telomeres raise the risk of several cancers, not lower it.
Reviewing and stopping unnecessary drugs in older people is safe in trials and reduces inappropriate prescriptions. Whether it makes them live longer or feel better is far less settled than the enthusiasm implies.
Loneliness and isolation raise mortality risk about as much as well-known risk factors. But trials of interventions to relieve them in older people are mostly low-quality, and the best do more than arrange company.
STAREE randomised 9,971 Australians aged 70 and over to atorvastatin or placebo. Cardiovascular events fell by 30%. Death, dementia and persistent disability, taken together, did not move.
Pelvic-floor muscle training cured stress incontinence in 56% of women versus 6% on no treatment. Guidelines put it and bladder training first, ahead of medication.
A landmark cohort found strained spousal caregivers had a 63% higher death rate over four years. Decades of trials show interventions help — more for a carer's knowledge and mood than for the underlying burden.
A Cochrane review finds fixing home hazards reduces falls by 38% in people at high risk of falling — and not at all in those who are not. On vitamin D, the US task force is blunt: no benefit.
In half a million people, weaker grip tracked with higher mortality — a strong marker. But it reads out whole-body strength and health, not a number you move by training your hands.
Appetite fades with age and malnutrition is common and under-screened. Supplement drinks produce small, real weight gains — and cut deaths mainly in those already undernourished, not everyone.
A large trial in adults up to 89 found structured activity cut the risk of losing the ability to walk. In frail nursing-home residents near 90, strength training more than doubled muscle strength.
Sleep genuinely gets lighter and more broken with age, though only its efficiency keeps declining after 60. Insomnia itself is not normal ageing, and its first-line treatment is not a pill.
A review pooling prevalence across the region ties the projection to modifiable risks that are unusually common there — smoking, inactivity, diabetes — layered on rapid ageing.
Sarcopenia got a formal definition and diagnostic cut-offs. The clinical guidelines that followed back resistance exercise strongly — and are far more cautious about protein powders, vitamin D and drugs.
Autopsy studies show educated brains carry the same disease but express it as dementia later. That is the concept's strength — and the reason it resists being turned into a to-do list.
Falls are the leading injury killer of older adults. The intervention with the strongest evidence is unglamorous — exercise that trains balance, gait and strength — and the trial data behind it is unusually solid.
ACHIEVE randomised 977 older adults and measured three-year cognitive change. The difference between hearing aids and health education was 0.002 SD units, p=0.96. One subgroup result is doing a lot of work.
Observational studies tie fitness to slower cognitive decline. When researchers randomise older adults to exercise, the cognitive payoff shrinks — in a Cochrane review of healthy people, to nothing.
The trials that made eye vitamins a standard recommendation enrolled only people who already had substantial disease. In AREDS2, neither omega-3 nor lutein beat placebo on the primary endpoint.
A 2026 meta-analysis pooled every randomised human trial of the gut-derived supplement for muscle health. Only one outcome, from two trials, could be combined — and it missed significance.
The link between puzzles and a sharper old age is real in the data and largely the wrong way round: the earliest changes of dementia quietly reduce the very activities that later look protective.
Twenty-two years of national data show income-related inequities in care use narrowing, and copayment increases for higher earners not reversing that. Services carrying extra user charges are the outlier.
A 23-year genetic-network analysis of 5,094 cases identified 107 molecular super-spreaders, mostly men aged 50-69, with 94.4% living within 2 km of major transport routes.
For a single missing tooth, implants and conventional bridges have similar, high survival over a decade. The evidence favours neither universally; the trade-offs are about neighbouring teeth, bone and cost.
Two vaccines cut RSV lower-respiratory illness in older adults by roughly two-thirds to four-fifths in their pivotal trials. US guidance now recommends them for everyone 75 and older and for high-risk adults from 50.
New conjugate vaccines replaced a confusing two-shot sequence with a single dose. The efficacy evidence is solid for the older conjugate; the newest ones ride on immune-response data, not their own outcome trials.
A six-year cohort study using Japan's long-term care records found a roughly 25% lower risk. The design cannot separate cooking from the ability to cook.
Pooling 94 cohort studies, grip strength tracked with later dementia, depression and disability. The authors rate their own confidence in the numbers as limited to moderate.
Researchers profiled nearly 356,000 nuclei from post-mortem hippocampi across five groups. Chromatin accessibility in neurogenic cells was already altered in people with preclinical Alzheimer's pathology.
In its pivotal trials the recombinant vaccine cut shingles cases by about 90 to 97 percent. Guidelines recommend two doses for adults from age 50, and for immunocompromised adults from 19.
A 1,151-person Hong Kong trial used trained lay counsellors, not clinicians, and no internet. The effect sizes are small, and the authors are explicit that they do not know whether it travels.
Two Nature papers apply duplex sequencing with fewer than five errors per billion bases to cheek swabs and sperm — finding 46 genes under selection in mouth lining and a fatherhood risk that rises with age.
A meta-analysis of 20 trials found a two-kilogram gain in one-rep max and no effect on bone density. A small crossover trial found functional strength gains largely independent of muscle mass.
A Nature paper maps the route cerebrospinal fluid takes to neck lymph nodes, finds the route degrades with age, and reports a mechanical device that reopened it in old mice.