Alcohol addiction, also known as alcoholism, can be caused by a combination of genetic, environmental, and psychological factors. People with a family history of alcoholism may be more susceptible to developing the condition. Trauma, stress, and mental health disorders can also increase the risk of alcohol addiction. Drinking alcohol regularly or in large amounts can also contribute to the development of alcohol addiction. Over time, the brain and body can become dependent on alcohol, making it difficult to quit drinking without professional help.