Gambling is risking something of value on an activity that relies on chance in the hope of making a profit. It has been part of most societies since prerecorded history, and gambling activities continue to flourish around the world.

People gamble for a variety of reasons. It can be for social, monetary or entertainment purposes, or a combination of these. For some, gambling provides a sense of adventure and the opportunity to win big. For others, it is a form of escape from everyday worries and concerns. The media portrays gambling as fun, sexy and glamorous and people are drawn to this image.

Problem gambling can change the way the brain responds to reward. It may lead to a false sense of reward when the gambler wins, which can then cause them to continue gambling. For some, this can become an addiction.

While there are many reasons why people engage in gambling, some individuals develop a disorder. This can be a range of behaviors from those who are at risk of developing more serious problems to those who meet the Diagnostic and Statistical Manual of Mental Disorders Fourth Edition (DSM-IV) criteria for pathological gambling.

In addition to affecting individual health, gambling can have societal implications. It can increase tax revenues and tourism, which can be beneficial for economies. It can also be used as an educational tool to teach skills such as pattern recognition and critical thinking. It can also be a social activity that encourages teamwork.