Gambling involves wagering something of value (usually money) on an activity whose outcome depends largely on chance with the hope of winning a prize. It has existed in virtually every society since prerecorded history and is often incorporated into local customs, rites of passage, or other activities. It may be done with real money or materials that have a monetary value such as marbles, poker chips, trading cards, pogs, or Magic: The Gathering collectible game pieces. The act of gambling can be a source of serious problems and psychological distress for many people, especially when it is compulsive or affluent.

Psychiatrists have long viewed pathological gambling as more of a compulsion than an addiction, and a desire to relieve anxiety rather than a craving for intense pleasure. In the 1980s, though, as research into underlying biology began to make its mark, the APA moved pathological gambling to the Addictions chapter of its Diagnostic and Statistical Manual of Mental Disorders.

Most people gamble in moderation, and it is an important part of some cultures. However, if you feel the urge to gamble is getting out of control, you can take steps to help yourself such as closing online betting accounts, leaving credit cards with someone else, limiting your access to money or avoiding places where gambling is offered. You can also talk to a GamCare adviser about getting help and support.