Genetic risk fell as autism and ADHD diagnoses rose in Denmark
A JAMA Psychiatry study of 37,000 Danes found people diagnosed more recently carried less genetic liability, pointing at broader criteria rather than a new environmental cause.
Aug 1, 2026
Latest
Autism diagnoses rose only in women and girls after 2020
Tracking 171,134 patients in a US health system, JAMA Network Open found male autism diagnoses flat or falling while female rates climbed 19% a year.
Aug 1, 2026
Mild cold lowered blood sugar. Colder did nothing.
A Diabetologia trial put people in a water-cooled suit until they shivered. In type 2 diabetes, the gentler cold cut 24-hour glucose. The harder cold did not.
Aug 1, 2026
Hearing loss tracked frailty, but not in hearing aid users
Across 2,644 older Americans with measured hearing, worse hearing came with more frailty. Among people wearing hearing aids, that link disappeared entirely.
Aug 1, 2026
Hearing loss tracked frailty, but not in hearing aid users
Across 2,644 older Americans with measured hearing, worse hearing came with more frailty. Among people wearing hearing aids, that link disappeared entirely.
Aug 1, 2026
Smoking and waist size beat every epigenetic clock tested
An Aging Cell study followed 1,108 middle-aged Finns for up to nine years and found a model built from age, sex, smoking, alcohol and body shape predicted disease better than any aging clock.
Jul 31, 2026
Longevity genes helped. Not smoking helped far more.
A GeroScience study followed 5,575 Finnish twins for 17.5 years and found a genetic score for long life cut death risk modestly, while heavy smoking more than tripled it.
Jul 31, 2026
US women reach menopause at 50. One in 10 gets there early.
A NHANES analysis of 15,322 women put median natural menopause at 50, found early menopause in 10% and traced it to smoking, education, sleep and depression.
Jul 31, 2026
Cutting alcohol in midlife showed no breast cancer benefit yet
EPIC researchers tracked drinking changes in 123,679 European women. Four years after the change, postmenopausal breast cancer risk had not moved either way.
Jul 31, 2026
Coffee tracked higher total testosterone but lower free testosterone
A Finnish study of 2,264 people at age 46 found heavier coffee drinkers were leaner and had a distinct hormone pattern in men, with a catch buried in which testosterone rose.
Jul 31, 2026
A plant-based pattern cut 20-year heart disease risk by 26%
Greek researchers followed 1,988 adults for two decades and found the diet that was best for the planet was also best for the heart. The Western pattern showed nothing.
Jul 31, 2026
Heavy drinking and obesity both raised diabetes risk, separately
A Diabetologia study followed 7,817 Korean adults for 16 years and found obesity and heavy drinking each raised diabetes risk, but combined less than adding them up would predict.
Jul 29, 2026
Newborns who skipped vitamin K had triple the brain bleeds
A JAMA Pediatrics study of 2 million Swedish births found infants who did not get the vitamin K injection had higher odds of bleeding, and refusals have more than doubled since 2006.
Jul 28, 2026
Vitamin K2 slowed artery calcium in a two-year trial
A JAMA Cardiology randomized trial gave 180 patients with coronary artery disease vitamin K2 or placebo for two years and found calcium buildup progressed more slowly on the supplement.
Jul 26, 2026
Vitamin A, not D, tracked with better lungs in asthma
A Thorax study of 1,165 children and 1,041 adults with asthma found blood vitamin A levels tracked with better lung function, while vitamin D did nothing measurable in children.
Jul 26, 2026
Six in ten US adults take supplements, and the mix changed
A JAMA Network Open analysis of 63,442 adults across 25 years of national survey data found supplement use rose from 51% to 60%, with multivitamins falling and ashwagandha, collagen and elderberry rising.
Jul 25, 2026
Light weights to failure grew more muscle than heavy ones
A 201-person trial in Medicine & Science in Sports & Exercise had untrained adults lift heavy or light to task failure for six weeks. The light group gained more.
Aug 1, 2026
Fast lifting built power in older adults, but not for everyone
A GeroScience trial put 36 middle-aged and older adults through 12 weeks of deliberately fast lifting. The gains came from force, and the speed gains went only to the slowest.
Aug 1, 2026
Weight training eased depression. So did the fake version.
A trial in young anxious women compared real resistance training against a deliberately feeble sham. Both produced large improvements, and the gap between them never became clear.
Aug 1, 2026
Atrial fibrillation sped up muscle loss over 12 years
A Swedish study of 2,048 older adults found people with the common heart rhythm disorder lost strength faster, and lost it fastest when inflammation markers were high.
Jul 31, 2026
Broken sleep in perimenopause tracked worse thinking decades on
A study of 2,097 postmenopausal women in Menopause found the worst perimenopausal sleep went with lower cognitive scores years later, but only in women woken by symptoms.
Jul 31, 2026
A menopause sleep drug worked at week 4, then didn't
A SLEEP trial gave 110 postmenopausal women elinzanetant or placebo and measured sleep in a lab. The 22-minute advantage at four weeks had vanished by twelve.
Jul 29, 2026
Longer sleep steadied next-day blood sugar in teenagers
A SLEEP study paired wrist trackers with continuous glucose monitors across 2,245 days in 206 Danish 18-year-olds and found sleep and glucose pushing on each other in both directions.
Jul 29, 2026
Weak grip and low weight tracked with insomnia after 60
A SLEEP study of 5,824 older adults found low muscle strength and being underweight each tracked with insomnia, and together more than doubled the odds.
Jul 28, 2026
Genetic risk fell as autism and ADHD diagnoses rose in Denmark
A JAMA Psychiatry study of 37,000 Danes found people diagnosed more recently carried less genetic liability, pointing at broader criteria rather than a new environmental cause.
Aug 1, 2026
Autism diagnoses rose only in women and girls after 2020
Tracking 171,134 patients in a US health system, JAMA Network Open found male autism diagnoses flat or falling while female rates climbed 19% a year.
Aug 1, 2026
Sibling study found no autism or ADHD link to paracetamol
Comparing siblings whose mothers used paracetamol in one pregnancy but not the other, a JAMA Internal Medicine study of 124,333 children found the association vanished.
Aug 1, 2026
Australia banned under-16s from social media. Most kept using it.
Three months after the world's first national minimum age law took effect, a BMJ study found more than 85% of under-16s were still on the restricted platforms.
Aug 1, 2026
Mild cold lowered blood sugar. Colder did nothing.
A Diabetologia trial put people in a water-cooled suit until they shivered. In type 2 diabetes, the gentler cold cut 24-hour glucose. The harder cold did not.
Aug 1, 2026
Loneliness tracked heart and metabolic disease across 33 countries
Pooling six aging cohorts covering 81,978 people, researchers found loneliness preceded cardiometabolic disease, and unhealthy habits explained only 5% of the link.
Aug 1, 2026
GLP-1 drugs tracked with fewer fractures, but only with diabetes
A JAMA Network Open study of 133,606 matched patients found GLP-1 drugs linked to lower fracture risk in type 2 diabetes, and higher risk in people without it.
Jul 29, 2026
Mazdutide took off 16.7% of body weight in a phase 3 trial
A JAMA phase 3 trial of 461 Chinese adults with obesity found the dual glucagon and GLP-1 drug mazdutide cut body weight by 16.65% over 60 weeks against 1.50% on placebo.
Jul 29, 2026