Notes

Throughout life, from grade school to the retirement home, friendship continues to confer health benefits, both mental and physical. But as life accelerates, people’s priorities and responsibilities shift, and friendships are affected, for better, or often, sadly, for worse.
During young adulthood, friendships become more complex and meaningful. In childhood, friends are mostly other kids who are fun to play with; in adolescence, there’s a lot more self-disclosure and support between friends, but adolescents are still discovering their identity, and learning what it means to be intimate. Their friendships help them do that.
Friendship networks are naturally denser, too, in youth, when most of the people you meet go to your school or live in your town. As people move for school, work, and family, networks spread out. Moving out of town for college gives some people their first taste of this distancing