Jesper Bengtson
Weak circadian rhythms linked to 2.5 times higher dementia risk in older adults
A three-year study of 2,183 seniors found the weakest body clocks carried the highest risk of cognitive decline.
Napping 20 to 30 minutes sharpens the mind, but over an hour is linked to cognitive decline
A new peer-reviewed review pins down the nap sweet spot, and flags the risks of overdoing it.
Women with type 2 diabetes report worse menopause symptoms, new study finds
Postmenopausal women with type 2 diabetes had more, and more severe, symptoms than those without.
Zero-sugar isn’t metabolically neutral: what WHO and a new Tufts trial review actually found
A WHO guideline and a 2026 meta-analysis complicate the "no calories, no harm" assumption.
Sleep, not screen time, is the strongest predictor of teen school and social success
A UC Davis study finds sleep outranks screens, exercise and diet in shaping adolescent success.
Only 1 in 3 US men gets the pre-biopsy prostate MRI that is standard in Europe
A simple scan can cut unnecessary biopsies and catch dangerous tumors earlier. Most American men never receive it.