Weight loss after quitting alcohol
Some people lose weight when they stop drinking, some don't, and some gain. Here are the numbers and the reasons.
If you’re stopping drinking and hoping the scale will reward you, here’s the honest version: it might, and it might not, and both are normal.
The short answer
Alcohol is calorie-dense, so removing it removes calories. Moderate drinkers who stopped for a month lost about 1.5 percent of their weight on average. But it varies: some people lose nothing, and some gain, usually because food replaces the drink. Weight isn’t the point of stopping, and it isn’t a measure of whether it’s working.
The calorie math
Alcohol has 7 calories per gram, “almost as many as a gram of fat” (NHS). Here’s what that looks like in a glass:
| Drink | Calories (NHS, up to) |
|---|---|
| 175 ml glass of 12% wine | 158 kcal |
| Pint of 5% beer | 222 kcal |
| Double (50 ml) of 40% spirits | 100 kcal |
Mixers add more, like cola and tonic water (NHS). To find your own number, multiply what you actually drink in a week by those figures. People usually undercount, so measure honestly.
For example, a pint of 5% beer every night is up to 222 × 7 = 1,554 kcal a week. That’s arithmetic from the NHS figure, not a prediction of weight change, because what you eat in its place matters just as much.
What a one-month study found
One month off shows up in the numbers. In a study that compared moderate drinkers who stopped for a month with people who kept drinking, the people who stopped had, on average (Mehta and Mehta):
- Weight about 1.5 percent lower
- Blood pressure lower (systolic about 6.6 percent, diastolic about 6.3 percent)
- A measure of insulin resistance (HOMA) about 25.9 percent lower
- A liver enzyme (ALT) about 14.5 percent lower
It was a small observational study of moderate drinkers, not people who are dependent. For a 70 kg person, 1.5 percent is about one kilogram. It tells you what tends to happen on average, not what will happen to you. If you drink heavily every day, don’t stop suddenly because of a number like this. Read the safety note at the end of this page first.
Why it varies so much
- How much you actually drank. A lot of weight change comes from the calories you remove. If you drank less than you thought, you remove less.
- What replaces it. Early on, many people crave sweet things. That’s common. If sugar replaces the drink calorie for calorie, nothing changes.
- Mixers and snacks. The drink often came with other things.
- Sleep and routine. Both are unsettled in the first weeks.
- Time. One month is a short window.
None of this is a failure. It’s just the picture.
If you want to keep it simple
- Eat regularly. Hunger makes everything louder, including cravings.
- Don’t fight the sugar craving in week one. The main job is not drinking.
- Move a little. A walk is plenty.
- Skip the weighing for a few weeks if it makes you tense.
- Keep the days the same. Today is built for that, with no scores and no counting.
What’s next
For the rest of what your body does, what happens when you stop drinking alcohol goes week by week and system by system.
Keep reading in this guide
- The benefits of quitting sorts what is well supported from what is not.
- Sleep, mood and energy explains why they wobble before they settle.
- The alcohol withdrawal timeline shows when symptoms start, peak and settle.
- Withdrawal symptoms lists what is common and what is an emergency.
- How your body recovers goes through liver, brain, blood pressure and long-term risk.
How many calories are in alcohol?
More than most people think: 7 calories per gram, almost as many as fat (NHS). That means up to 158 kcal in a 175 ml glass of 12 percent wine, up to 222 kcal in a pint of 5 percent beer and 100 kcal in a 50 ml double of 40 percent spirits.
How much weight can you lose in a month without alcohol?
Maybe about 1.5 percent of your weight. That's the average drop in moderate drinkers who stopped for a month (BMJ Open study). That is an average, not a promise. Results vary with how much you drank and what you eat instead.
Why am I not losing weight after quitting alcohol?
Common reasons: you were drinking less than you think, you're eating more or sweeter food, or mixers and snacks changed. Early cravings for sugar are common. Regular meals help.
Why did I gain weight after quitting alcohol?
Some people replace the drink with food and sugar, especially in the first weeks. It's common and usually temporary. Eating regularly and keeping the routine simple tends to help.
Sources
- Calories in alcohol (NHS) · NHS
- Effects of one month of abstinence from alcohol on health measures in moderate drinkers · Mehta and Mehta, BMJ Open, 2018
We check these when we update a page. See how we write and check on the editorial policy.
Today is a free place to keep a simple routine, including regular meals. No scores, no counting, and everything stays on your device.
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The First Hour isn't medical advice, and we're not doctors. This is writing grounded in research by people who got sober and wanted to share what helped. It's not treatment, diagnosis, or a substitute for a doctor, therapist, or recovery program. Alcohol withdrawal can be medically dangerous. If you're detoxing, struggling, or in crisis, please reach out to a medical professional or a helpline.