The brain benefits of having buddies
Boston Globe - 03/09/2017
One widely shared study from last fall, conducted in part by researchers at Harvard and Northeastern, suggested that people with a greater number of Facebook friends were less likely to die than less sociable counterparts.
But those same results revealed another surprise: The Facebook behaviors most closely associated with reduced mortality seemed to involve activity following face-to-face interactions, such as posting photos from a shared event. In order for our brains to reap the benefits of friendships, we seem to need some kind of real-world commitments.