Thursday, July 30, 2026 Evidence-led medical research news
The First Cohort
Medical research, with the receipts

cognitive-decline

5 stories tagged "cognitive-decline"

Brain & Aging

Same Diet, Same 15 Pounds: Only the Women Who Ate in an 8-Hour Window Got Sharper

Two groups of older women cut the same calories and lost the same 15 pounds over six months. The ones who packed eating into an 8-hour window still scored better on problem-solving, from a 47-person pilot that hasn't been peer-reviewed.

Brain & Aging

The Sweeteners Sold to Diabetics as the Safe Swap Tracked With Faster Brain Aging

Brazilian researchers followed 12,772 adults for eight years. The ones consuming the most artificial sweeteners, about a diet soda's worth a day, showed cognitive decline equal to 1.6 extra years of brain aging, and diabetics fared worst.

Brain & Aging

In Mice, Early Stress-Drinking Corroded a Brain Region a Long Sobriety Couldn't Repair

In mice, pairing alcohol with stress in early adulthood damaged a tiny noradrenaline hub in the brainstem, and a prolonged stretch of abstinence didn't reverse it. The cognitive cost surfaced in middle age.

Brain & Aging

Middle-aged Americans Are Weaker, Lonelier, and Forgetting More Than Their Parents Did at the Same Age

A 17-country study finds U.S. adults in their 50s are doing worse on memory, grip strength, loneliness, and depression than their parents were. The United States is the only country going meaningfully backward.

Nutrition & Food

8,300 Brazilian elders, one saltshaker, and the 80 percent of sodium nobody mentions

A Frontiers in Public Health survey of 8,336 Brazilians over 60 found older men reach for the saltshaker most. Buried in the same paper: the shaker only accounts for 6 to 20 percent of total sodium. The other 70-plus percent already arrived from the factory.