Research suggests the social hierarchies of adolescence can shape adult health, relationships and expectations for decades, but supportive friendships and a conscious effort to revise old assumptions may weaken the grip of painful school experiences.
An analysis of 51 studies found that healthy diets, exercise, and certain medications changed DNA biomarkers associated with aging, while supplements showed little effect. Researchers caution that these shifts do not prove people remain healthier or live longer.
Artificial intelligence, MRI scans and sleep tracking could help scientists detect unhealthy brain ageing earlier, while research on depression and hibernating squirrels may reveal new treatments. Yet lifestyle, social connection, activity and sleep remain essential.