Loneliness can be deadly.
A recent study conducted by researchers at the University of Chicago tracked people over the age of 50 for six years. It found people who reported chronic feelings of isolation or loneliness had a 14 percent greater likelihood of dying than the sample as a whole. Loneliness, it turned out, was twice as deadly as being extremely overweight. Another study, published in the Proceedings of the National Academy of Sciences, found that social isolation was associated with a plethora of serious ailments from lung disease to depression.