The NIAAA weekly volume guideline is not to exceed 14 drinks per week for men and 7 drinks per week for women. (Daily guideline is no more than 4 drinks in any day for men, and 3 drinks in any day for women.) Refer to the U.S. low-risk drinking guidelines.
Based on per capita consumption from alcoholic beverage sales data, the average American drinks roughly 1.35 drinks per day, 9.5 drinks per week and 494 drinks per year, said Aaron White, senior scientific advisor to the National Institute on Alcohol Abuse and Alcoholism director.