Dark chocolate’s theobromine linked to slower aging in humans

A study of about 1,600 adults found higher blood levels of theobromine, a compound in cocoa, linked to slower biological aging markers—lower GrimAge acceleration and longer telomeres. The association persisted after adjusting for age, weight, smoking, and even caffeine, and appeared strongest among former smokers. The work is observational, so it cannot prove causation, and researchers emphasize diet quality over chasing a single nutrient. They note the potential that theobromine enhances cocoa’s polyphenols, and call for controlled trials to determine causality and practical guidance on dark‑chocolate consumption.