#21 Having No Friends Can Be as Deadly as Smoking
A Harvard University study revealed a link between social isolation and levels of a blood-clotting protein (fibrinogen) that can cause heart attacks and stroke. Researchers claimed that as the number of social connections falls, the level of the blood-clotting protein rises.
Having fewer friends has the same impact on protein fibrinogen levels as smoking cigarettes. So in conclusion, friends can actually make our lives better for real!