Your friends might be doing more for your health (and your biological age) than your morning supplements. A new study suggests that who you spend your time with can influence how quickly your body ages.

Researchers from the U.S. National Institute on Aging analyzed data from more than 2,000 adults to explore how social life affects biology. They developed a measure called “cumulative social advantage,” which looked at the depth of relationships, emotional support, and community involvement.

The results revealed a striking pattern. People who stayed connected and engaged aged more slowly at the cellular level. Their DNA showed fewer changes linked to aging, and their bodies carried lower levels of chronic inflammation.

Luigi Ferrucci, chief scientific director at the National Institute o

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