It is not recommended to quit alcohol cold turkey without proper medical supervision, especially for heavy drinkers. Alcohol withdrawal symptoms can range from mild to severe and can include anxiety, tremors, seizures, and delirium tremens (DTs), which can be life-threatening. In severe cases, withdrawal symptoms can cause brain damage, cardiac arrhythmias, and respiratory failure. Therefore, it is important to seek medical attention and support from a healthcare professional or a treatment facility before attempting to quit alcohol. They can provide appropriate treatment, including medications and therapies, to manage withdrawal symptoms and help with long-term recovery.