# Long friendships may slow aging and reduce inflammation

> Maintaining close friendships over years could protect your physical health as much as your mental wellbeing.
- Title: Long friendships may slow aging and reduce inflammation
- Summary: Maintaining close friendships over years could protect your physical health as much as your mental wellbeing. Strong, lasting friendships are linked to…
- Keywords: friendship, aging, inflammation, health, brain behavior and immunity, midus study, harvard study of adult development, robert waldinger, andrea bonior, longevity, social connections, biological markers
- Source: Psychologies — https://psychologies.com/moi/moi-et-les-autres-moi/amitie/Les-personnes-qui-gardent-leurs-amis-pendant-des-annees-pourraient-en-retirer-un-benefice-beaucoup-plus-inattendu-que-le-simple-fait-de-se-sentir-moins-seules-640269
- Author: Laurena Valette
- Published: 2026-09-16T06:02:47+00:00
- Read time: 1 min
- Topics: friendship, aging, inflammation, health, brain behavior and immunity, midus study, harvard study of adult development, robert waldinger, andrea bonior, longevity, social connections, biological markers
## Friendship gets scientific recognition
Long overlooked, friendship is finally being studied seriously. The bonds we form throughout life shape our journey far more than we realize.
## Friends may slow biological aging
A study in Brain, Behavior, and Immunity found that people with strong social ties show biological markers of slower aging and less inflammation.
## Quality matters more than quantity
Researchers analyzed 2,000 middle-aged Americans, measuring cumulative social advantage: emotional support, family ties, community engagement, not just friend count.
## Blood tests reveal the connection
People with stronger social networks showed slower biological aging and fewer inflammatory markers, which are linked to chronic diseases.
## Harvard study confirms the pattern
A 90-year Harvard study found relationship quality at age 50 predicted health at 80 better than standard medical indicators.

> Prendre soin de ses relations est aussi une manière de prendre soin de soi.
## Friends encourage healthy habits
Friends push us to go out, move more, and talk through stress. These interactions may reduce inflammation, boost immunity, and preserve cognitive abilities.
## Key takeaway

Strong, lasting friendships are linked to slower biological aging and lower inflammation, making them as important for health as diet and exercise.