A scientist explains how the pain of loneliness makes us sick.
“Humans are social animals” is a phrase often repeated by psychologists to sum up why we’ve been such a successful species. Our ability to live, work, and cooperate in groups is the key to our survival.
But it comes with a tradeoff. Companionship is an asset for human survival, but its mirror twin, isolation, can be toxic.
Loneliness is associated with higher blood pressure and heart disease — it literally breaks our...