Blog · Published 19 October 2026 · By Sober Counter · How we write these posts

One week without alcohol: what changes in your body after 7 days

What a week without alcohol does: withdrawal passes, blood pressure can drop, the calories add up, and what a week does not fix yet, like sleep and the liver.

Quick answer

After a week without alcohol, withdrawal has usually passed: the NHS says withdrawal symptoms usually last 3 to 7 days, and Drinkaware says most people feel better within a week. In a small study of men with high blood pressure, it fell within 4 alcohol-free days. You have also skipped a week of alcohol calories, which can be over 1,000. Sleep often needs longer to settle, and a fatty liver needs about 2 weeks without alcohol to return to normal.

A week is the first big milestone. Here is what has changed by day 7, what has not caught up yet, and what comes next.

If you drink heavily every day, speak to a doctor or a local alcohol service before you stop. Stopping suddenly when you are dependent on alcohol can be dangerous.

Withdrawal has usually passed

If you had withdrawal symptoms, such as sweating, shaking, headaches, anxiety or difficulty sleeping, the worst should be behind you. The NHS says withdrawal symptoms "begin within 6 to 12 hours of your last drink, and usually last from 3 to 7 days". The UK charity Drinkaware puts it simply: "Most people feel better within a week of stopping drinking."

Not everyone is the same. The NHS adds that some symptoms "may last for a few months, especially if you drink heavily". Our timeline of what happens when you stop drinking covers the first days in more detail.

Your blood pressure may already be lower

One of the earliest measured changes is in blood pressure. In a 1984 study in The Lancet, 16 men with high blood pressure who regularly drank up to 80 g of alcohol a day, about 10 UK units, were looked after in hospital for a week. When they stopped drinking, their blood pressure fell significantly within 4 days. When another group started drinking again after 3 days without alcohol, their blood pressure went back up.

It was a small, old study in men who already had high blood pressure, so it does not tell you exactly what will happen to you. But it shows how quickly the effect can start. After a month, a larger study of 94 moderate to heavy drinkers measured systolic blood pressure 6.6% lower. Our page on 30 days without alcohol covers it.

You have skipped a week of calories

The NHS says alcohol has 7 calories per gram, and gives these figures:

a pint of 5% beer: up to 222 calories
a 175ml glass of 12% wine: up to 158 calories

So a week without four pints on a Friday night saves up to 888 calories, and a week without a glass of wine every evening saves up to 1,106. A US study also found that men ate more food on the days they drank, on top of the drinks themselves.

Do not expect much on the scale yet. The best study measured weight after a month, not a week: a typical drop of 1.5%. Our guide to weight loss after quitting alcohol explains what to expect.

No hangovers

This one is obvious, but it adds up. Drinkaware points out that without drinking, the nausea, headaches or tiredness you may have felt the morning after "could be replaced with improved mood as well as feelings of productivity". Seven mornings without a hangover add up.

What a week does not fix yet

Sleep. Many people still sleep badly, or feel more tired, after a week. Alcohol holds back REM sleep, and a review of sleep in alcohol dependence found only "limited recovery" of sleep problems within the first 30 days. Our guides to insomnia and tiredness after quitting alcohol explain why and what helps.

The liver. Drinking too much makes fat build up in the liver. NHS inform, Scotland's health service, says: "If you stop drinking alcohol for 2 weeks, your liver should return to normal." So at one week, a fatty liver is about halfway there. Later stages of liver damage are different: the NHS says the scarring of cirrhosis "cannot usually be reversed".

What comes next

Two weeks: a fatty liver should be back to normal, and a brain scan study of people treated for alcohol dependence found partial recovery of grey matter.
A few weeks: Drinkaware says many people with alcohol-related low mood "begin to feel better within a few weeks".
One month: better blood sugar control, lower blood pressure and some weight loss, measured in a study of moderate to heavy drinkers.

When to get help

Call 999 or go to A&E (or your local emergency number) if, after stopping, you or someone else is shaking visibly, unusually restless or upset, confused, seeing or hearing things that are not there, or has a seizure. The NHS lists these as signs of severe withdrawal.

See a GP or an alcohol service if you got withdrawal symptoms this week, or if you are finding it hard to stay off alcohol. In the UK you can also call NHS 111.

Questions

What happens after 1 week without alcohol?

Withdrawal has usually passed: the NHS says it lasts 3 to 7 days, and most people feel better within a week. Blood pressure can start to fall within days, and you have skipped a week of alcohol calories. Sleep often needs longer.

Does your liver recover after a week without alcohol?

It is on its way. NHS inform says a fatty liver should return to normal after 2 weeks without alcohol, so a week is about halfway. More serious damage, such as cirrhosis, usually cannot be reversed.

Can you lose weight in a week without alcohol?

You save the calories straight away, up to 1,106 for a glass of wine every evening, but the scale moves slowly. A study of moderate to heavy drinkers measured a typical 1.5% weight loss after a month.

Why do I still feel tired after a week without alcohol?

Because sleep takes longer to recover than the rest of withdrawal. Alcohol holds back REM sleep, and in people who were dependent on alcohol, sleep problems recover only partly in the first 30 days.

Sources

Need support right now?

In the UK, the NHS lists free alcohol support services: NHS alcohol support. In the US, the SAMHSA National Helpline is free, confidential and open all day, every day. Elsewhere, your local health service can point you to help near you.

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