Many people who gamble do so without any serious negative consequences, but gambling can be harmful for some people. Harmful gambling is repeated gambling that leads to negative consequences for the person who gambles or for their family members or friends. Signs of harmful gambling include gambling more and more money to feel the same level of excitement, thinking about gambling all the time, trying to win back lost money by gambling more, and gambling when feeling sad, anxious, or stressed. Many people with harmful gambling have tried to cut down or stop gambling but feel irritable or restless when they try. Some may lie about their gambling, lose important relationships or jobs, or rely on other people for money because of the money they’ve lost gambling.