For how we live.
Consumer clocks report an age, an age gap or a pace of ageing. Expert panels agree no single biomarker is sufficient — and clocks have failed to move when an intervention demonstrably worked.
European hypertension specialists found only two wrist-cuff blood pressure watches with validation studies done to established protocols. A sleep group ran a Galaxy Watch against two nights of polysomnography.
A National Sleep Foundation position statement and a new national survey land on the same problem: a third of US adults track their sleep, and the numbers they trust most are the ones devices measure worst.
A 19-trial review of peptides prints two different wrinkle effect sizes in its own abstract. A vitamin C trial ran four weeks against retinol, with nothing inert to compare either of them against.
The FDA's own trials found every chemical filter tested crossing a regulatory threshold after a single application. That threshold triggers safety studies; it is not a finding of toxicity.
A scoping review mapped 204 consumer nutrigenetic panels at a mean price of $234. Across them, 3,309 different genes were linked to dietary recommendations.
A Milbank Quarterly analysis argues wellness companies use the political strategies of harmful commodities industries. A separate review puts the downstream cost of low-value wellness testing above $100 billion a year.
A February scientific statement declines to recommend the category for clinical decisions. Six weeks earlier, a journal retracted a validation study of a popular consumer model.
A mirror that scores physiological age in 30 seconds. A watch that watches your gait for dementia. The gap between what these products measure and what they imply is the story of the show.
The line saying a product is not intended to diagnose, treat, cure or prevent disease must sit beside each health claim. Industry asked for that to change; the FDA says it may propose a rule.
A study in this month's JAMA Internal Medicine mapped the rules governing IV hydration spas in every state, read 255 of their websites, and phoned them. Two of the websites cited a source.
A meta-analysis of pedometer, tracker and smartwatch interventions lasting 12 to 48 weeks found no significant change in systolic or diastolic pressure — nor in weight, glucose or HbA1c.
Two BMJ reviews found high-risk usability problems in 18 of 30 tests, and use judged contrary to evidence-based guidance for 11 of the 19 conditions covered.
Collagen, flavanols and polyphenols beat their comparators on skin elasticity and sun tolerance. The pooled estimates carry heterogeneity of 95% to 98%, and some comparators were low doses of the same ingredient.