Gambling is an activity where a person stakes something of value for the chance of winning a prize. This can be money or other possessions. People often gamble in places like casinos, racetracks or online. Historically gambling has been associated with activities of chance, but in modern times skills are sometimes involved as well (see skill-based gambling).

Some people are more vulnerable to developing a gambling disorder than others. Vulnerability is highest among young people and men, and those with low incomes. People with mood disorders like depression or anxiety are also more likely to develop a gambling problem.

The main reason that people gamble is to win money. However, gambling also provides an escape from everyday life and can be a source of thrills and excitement. It also can satisfy basic needs, such as a sense of belonging and status. Casinos are built around this idea, cultivating a feeling of exclusivity and celebrity.

Gambling may lead to a variety of health problems, including stress, poor nutrition, sleep disruption and drug abuse. It can also lead to debt and financial hardship. Many people who have gambling addictions find it difficult to stop, and are often unable to manage their finances without help.

A wide range of opinions exist on whether or not gambling is addictive. Different researchers, psychiatrists and treatment care clinicians frame questions about gambling in ways that reflect their disciplinary backgrounds, training and experience. The resulting variation in nomenclature can make it difficult for individuals and organizations to discuss issues about gambling.