We were created for connection. We are naturally social animals. It begins in infancy. From the moment of birth, the infant needs human contact and connection for survival. Years ago, we discovered that babies deprived of human connection fail to thrive, and sometimes die.

As humans grow, the impact of isolation continues. Disconnection from peers is a major reason for school dropouts. Teenagers, who identify themselves as outcasts, often slip into delinquency, other forms of antisocial behavior, violence or suicide.

In adults, extended loneliness can lead to depression, alcoholism, and physical illness. Studies show that a lack of social or family support can increase the risk of heart disease. It tends to elevate blood pressure, make the heart muscle work harder, and raise the levels of stress hormones. Loneliness can also heighten our perception of stress and cause insomnia.

So, is loneliness the same as being alone? Not really. Feelings of loneliness are experienced most acutely when other people are around us, but we feel disconnected. In his book, “Traveling Light,” Max Lucado points out that “Loneliness is not the absence of faces. It is the absence of intimacy. Loneliness doesn’t come from being alone; it comes from feeling alone.”

There are many potential causes of loneliness. As we get older, we experience the death of more-and-more relatives and friends. The older we get, the more likely we are to lose our core social connections. The feeling of disconnection is a major cause of depression in the elderly.

Sometimes, loneliness in adulthood can be traced to negative childhood events. Children who experience parental distance or rejection are more likely to feel lonely as adults. They tend to see themselves as less likeable or lovable, making them less likely to approach others. They may reject others before others have a chance to reject them.

Often, we feel lonely because of inaccurate perceptions. We do mind reading, where we assume others are thinking critical or disapproving thoughts about us. We assume they don’t like us or don’t care about us. We may assume we are disconnected, even when others like us or love us. We assume that we are different from others.

So, you were created for connection. Your mental and physical health will benefit from having positive relationships. Put some energy into reconnecting with old friends, strengthening current relationships or creating new ones. Don’t assume that they won’t like you or won’t have time for you. Make a call. Set up a lunch date. Start a conversation. You’ll feel better for the effort.