Having no close friends can influence a person's life in ways that stretch far beyond boredom or loneliness. While not everyone craves a large social circle, a total absence of meaningful connections ...

While it may have come easier when they were younger, some people have a hard time making friends as adults. Perhaps they're incredibly shy, suffer from low self-esteem, or even prefer to be alone.

They know how to look out for themselves. While many of us subconsciously experience the benefits of interpersonal interaction in our daily lives, studies like one from the Family Medicine and ...