title_body: How much actual alcohol is safe to drink per day?
upvoted_answer: The CDC suggests no more than 2 drinks a day as moderate drinking.
  
  The National Institute on Alcohol Abuse and Alcoholism suggests no more than 4 drinks per day, and no more than 7 drinks per week, to stay at a low risk for an alcohol use.
  
  At 17 your brain is still developing and imbibing alcohol runs the very real risk of affecting that development. Drink in moderation.
  
  In response to the below comment, a single drink technically does vary but about 45ml / 1.5oz of spirit (e.g. vodka), a 5oz glass of wine, or a 12oz beer.
  
  When I say it varies, different locations have different measurements. Check out this page:
  
  Standard drink (Wikipedia)