Drinking alcohol before the age of 21 can have negative health, behavioral, and social consequences. It can damage brain cells and memory, leading to problems with understanding and cognition. It increases the risk of car accidents, as teens who drink are twice as likely to be in crashes. Drinking is also linked to risky sexual behavior and assault. While some argue the drinking age should be lowered to match smoking and voting ages, drinking poses unique risks to health and safety that smoking and voting do not. Thus, maintaining the legal drinking age at 21 helps reduce these risks and consequences.