Safe Alcohol Limits: CDC Guidelines, Definitions & Health Risks

The CDC defines moderate drinking as up to 1 drink/day for women, 2 drinks/day for men—not an average, but a daily limit.

What Counts as One Drink

• 12 oz regular beer (5% ABV)
• 5 oz wine (12% ABV)
• 1.5 oz distilled spirits (40% ABV / 80 proof)

Many craft beers, large wine pours, and mixed drinks exceed these amounts.

Binge & Heavy Drinking (High Risk)

• Binge: ≥4 drinks (women) / ≥5 drinks (men) in ~2 hrs → BAC ≥0.08%
• Heavy: ≥8 drinks/week (women) / ≥15 drinks/week (men)

Health Risks of Excess

• Liver: steatosis → steatohepatitis → cirrhosis
• Cancer: breast, colorectal, esophageal, liver, head/neck (dose-dependent)
• Cardiovascular: hypertension, cardiomyopathy, arrhythmia, stroke
• Neurologic: cognitive decline, neuropathy, Wernicke-Korsakoff
• Mental health: depression, anxiety, suicide risk
• Injury: MVA, falls, violence, drowning
• Immune suppression, pancreatitis, reproductive harm

Who Should Avoid Alcohol Entirely

• Pregnant or trying to conceive
• Taking interacting medications (benzos, opioids, warfarin, metronidazole, etc.)
• Liver disease, pancreatitis, heart failure, certain arrhythmias
• History of AUD or strong family history
• Under 21 (US)

Harm Reduction

• Track drinks (apps, journal)
• Alternate with water; eat before/during
• Set limits before events
• Alcohol-free days each week
• Seek help if unable to control (NIAAA Rethinking Drinking, SAMHSA 1-800-662-HELP)

Less is better. No amount is completely risk-free.