Putting something of value on an event that is at least partly determined by chance, with the hope of gaining more than what was put at risk. Examples include betting on sports, buying lottery or scratch tickets, and even participating in office pools. Almost all of the money that is legally wagered on games of chance in the world comes from gambling.

Problem gambling has become a major concern for public health. It affects people of all ages, from children to the elderly. It often causes financial distress, unemployment, and other serious problems. People who gamble frequently also have a higher risk of substance use disorders and other mental health problems.

Most gambling is done to achieve a feeling of excitement and gratification, whether it is winning or losing. Research shows that the brains of people with gambling disorders have smaller volume in their amygdala and hippocampus, which are associated with impulse control.

The good news is that there are many things you can do to prevent or stop gambling from becoming a problem. Talk with your family and friends, set spending limits, and find other activities to do. Consider joining a support group, such as Gamblers Anonymous. Exercise, diet, and sleep are all important in preventing gambling addiction. If you have a gambling problem, see a professional for help. Speak with your health care provider about local referral resources for certified gambling counselors or intensive treatment programs. Getting help is the first step to recovery.