GLP-1 drugs show startling effect on aging: '2-to-4 years'
Newsweek reports on a study by researchers from Eli Lilly and Novo Nordisk that used protein-based "molecular clocks" to estimate biological age in more than 10,000 overweight or diabetic patients, half given placebo. GLP-1 drugs were linked to heart biological age about 2-to-4 years lower than placebo, and 1-to-4 years lower on other organ clocks. Authors disclosed competing interests. Effects in healthy people are unknown.
Why it matters: Relevant to overweight or diabetic adults taking or weighing GLP-1 medications, and to clinicians who prescribe them or refer patients for medical weight loss.
A summary of another publisher's reporting, written with AI and checked automatically against the story. The reporting belongs to newsweek.com. October 14, 2026.
