You can feel alone on a crowded elevator or standing in line at the post office. Loneliness is a person’s satisfaction with the level of connection they desire versus the reality of what they have or don’t.

Americans feel more alone now than ever before. This seclusion is a powerful force that impairs many parts of our lives. It can be as harmful as obesity, cigarettes, or a drug or alcohol addiction.

Individuals who struggle with alcohol and drug addiction face mental health challenges. Sometimes, it’s difficult to know which problem happened first. People can start misusing drugs because of their mental illness. Or they developed mental illness after starting to misuse drugs. We call this dual diagnosis or co-occurring disorders.

This guide explores the statistics, effects, and resources related to loneliness, mental illness, and substance abuse, providing insights into each aspect and offering support to those in need.