The time you spend in interaction with others can dramatically affect your physical health.
One evening I was called to an old, ramshackle home out in the country to examine a home death. When I arrived at the house, a deputy met me at the door. "Doc, sure looks natural. The old lady's been up here, all alone, for years. Never left the house. Never had any visitors. Never went to the doctor—not that I can blame her."
He looked rather suspiciously toward me as I ducked to enter the undersized door, ignoring his slight to the medical profession. He continued his soliloquy: "She had a friend who brought her food and supplies. Her friend found her here this evening and called us."