Social isolation can be as harmful to your health as smoking or a sedentary lifestyle. A large part of this effect is driven by the subjective sense of social isolation we call loneliness. New research shows that human beings are simply far more intertwined and interdependent—physiologically as well as psychologically—than our cultural prejudices have allowed us to acknowledge. “If you want to go fast,” says an African proverb, “go alone. If you want to go far, go together.
Source: here