Substance guides

How many calories are in alcohol? The hidden health impact

Published February 9, 2026 · 8 min read · Updated April 2026

Reviewed for accuracy by licensed clinical professionals. Editorial process.

Alcohol contains 7 calories per gram — nearly as much as fat and almost twice protein or carbs. These empty calories add up faster than most people realize.

Calories by drink

Beer (12 oz): 150 cal. Light beer: 100. Wine (5 oz): 125. Liquor shot: 95. Margarita: 300-500. Piña colada: 500-650. Three glasses of wine nightly is 390 calories — 142,000 extra per year, or ~40 pounds of potential weight gain.

Beyond calories

Your liver stops burning fat while processing alcohol. Cortisol increases, promoting belly fat. Sleep architecture is disrupted. Inflammation increases body-wide. B vitamins, magnesium, and zinc deplete. See exactly what your drinking pattern adds up to with CalcWolf's Alcohol Health Calculator — it tallies calories, liver stress, sleep impact, and cumulative health effects.

The weight loss effect

Many people lose 10-20 pounds in the first 2-3 months after quitting without other changes — from eliminated calories, restored metabolism, better sleep, and reduced inflammation.

Authoritative sources

This article references guidelines from: SAMHSA · NIDA · NAMI

Frequently asked questions

How do I find treatment near me?

Search our directory by state or city, or call SAMHSA at 1-800-662-4357 for free referrals.

Does insurance cover treatment?

Yes. Most plans cover substance use and mental health treatment under the Mental Health Parity Act.

What if I cannot afford treatment?

Free and low-cost options exist in every state. Call SAMHSA at 1-800-662-4357 for local programs.

Disclaimer: Informational only. Not medical advice. SAMHSA: 1-800-662-4357.