Gambling is the risking of something of value (money, property or other assets) on an event that has some element of chance and involves a potential gain or loss. This includes: regulated gambling – such as lotteries, sports betting and horse and greyhound racing speculative gambling – such as business or stock speculation a person may also gamble in certain legal games such as cards, dice and roulette.
A person is considered to have a problem with gambling when their behavior meets criteria in the Diagnostic and Statistical Manual of Mental Disorders (DSM) — the book used by mental health professionals to diagnose psychological problems.