Alcohol addiction can occur due to a variety of factors, including genetic, environmental, and behavioral factors. Some people may have a genetic predisposition to alcohol addiction, meaning that they are more likely to become addicted to alcohol if they begin drinking. Environmental factors, such as family history of addiction or exposure to alcohol at an early age, can also increase the risk of developing an addiction. Behavioral factors, such as using alcohol as a coping mechanism for stress or mental health issues, can also contribute to the development of addiction. Ultimately, the causes of alcohol addiction are complex and can vary from person to person.