Health risks: It can affect the normal development of vital organs and functions, including the brain, liver, bones and hormones. Beginning to drink before age 14 is associated with increased health risks, including alcohol-related injuries, involvement in violence, and suicidal thoughts and attempts.
So in the majority of states, the minimum serving age for alcohol is 18. Utah, Nevada, and Alaska require servers to be 21 years of age, while Maine allows 17 year-olds to serve alcoholic beverages.