Alcohol Consumption Guidelines

Definition and Measurement

The American College of Gastroenterology defines a standard drink as 10 grams of pure alcohol, which is used in India and aligns with the European standard 1, 2
The Indian standard drink definition differs from the US definition of 14 grams of pure alcohol 1, 2

Beer (regular, 5% alcohol): 330 mL (one bottle) = approximately 1.3 standard drinks, according to the Indian standard drink definition 8
Wine (12% alcohol): 100 mL (small glass) = approximately 1 standard drink, according to the Indian standard drink definition 8
Spirits/Hard liquor (40% alcohol/80-proof): 30 mL (one peg) = approximately 1 standard drink, according to the Indian standard drink definition 3, 4

The American Heart Association recommends that women limit their alcohol intake to ≤10 grams per day (1 standard drink) or ≤70 grams per week, and men limit their intake to ≤20 grams per day (2 standard drinks) or ≤140 grams per week 3, 4, 9
Women are twice as sensitive to alcohol-mediated hepatotoxicity and develop more severe alcoholic liver disease at lower doses and shorter duration than men, according to the American Association for the Study of Liver Diseases 6, 7

Drinking outside mealtimes increases alcoholic liver disease risk 2.7-fold compared to drinking only with meals, according to the American Association for the Study of Liver Diseases 6, 7
Women may have a lower threshold of perhaps ≤70 grams per week (≤10 grams daily) for toxic effects on the liver, according to the American Association for the Study of Liver Diseases 6, 7

Light to moderate alcohol consumption shows a J-shaped association with cardiovascular disease and ischemic stroke, with protective effects at low doses but elevated risk with heavy consumption, according to the American Heart Association 3, 4
The American Heart Association states that light drinking (<151 grams/week) shows protective effects for ischemic stroke, while heavy drinking (>300 grams/week) significantly increases all stroke types 3, 4

The American Cancer Society states that alcohol consumption is an established cause of at least 7 types of cancer, and any amount of alcohol increases risk of some cancers, most notably breast cancer 5
Cancers causally linked to alcohol include upper aerodigestive tract, liver, colorectal, female breast, and stomach (probable), according to the American Cancer Society 5

Obesity and excess body weight increase alcoholic liver disease risk independent of alcohol quantity, according to the American Association for the Study of Liver Diseases 6, 7
Protein-calorie malnutrition increases mortality in alcoholic liver disease, approaching 80% in severe malnutrition, according to the American Association for the Study of Liver Diseases 6, 7