How much alcohol is too much?

Last updated: 24 October 2026

No amount is risk-free, so the short answer to how much alcohol is too much is that less is better: the World Health Organization says there is no safe amount, and the CDC says drinking less is better for your health than drinking more. The best-known markers are the UK limit of 14 units a week and the older US figures of two drinks a day for men and one for women; the 2025 to 2030 US guidelines no longer give a daily number.

Is any amount of alcohol safe?

No amount is described as risk-free by the World Health Organization. Its 2023 statement says that risk starts from the first drop, and that the current evidence cannot show a threshold below which there is no effect on health.

The WHO fact sheet gives the scale: 2.6 million deaths worldwide were attributed to alcohol in 2019, and 4.4% of cancers diagnosed that year. These are estimates for whole populations, across all levels of drinking, not a forecast for one person.

What are the official limits?

In the UK, the NHS advises men and women alike not to drink more than 14 units a week on a regular basis, and to spread it over three or more days if you regularly drink that much. If you want to cut down, it also suggests several drink-free days each week, and Dry January stretches that to a whole month. In the US, the CDC still lists moderate drinking as two drinks or less in a day for men and one drink or less in a day for women.

Those US figures come from the earlier dietary guidelines. The 2025 to 2030 Dietary Guidelines for Americans, published in January 2026, tell adults to consume less alcohol for better overall health and, as the American Association for the Study of Liver Diseases noted, no longer set any daily limit.

The US National Institutes of Health also defines heavier patterns. On its drinking levels page, heavy drinking is five or more drinks on any day or 15 or more a week for men, and four or more on any day or eight or more a week for women. Binge drinking typically means five or more drinks for men, or four or more for women, within about two hours.

The UK and US count differently, so the same glass is a different number in each system. A 175 ml glass of 12% wine is 2.1 UK units by the NHS formula (12 × 175 ÷ 1,000), and about 1.2 US standard drinks.

How much is one drink?

In the US, a standard drink holds 14 grams of pure alcohol. The CDC lists 12 ounces of 5% beer, 5 ounces of 12% wine and 1.5 ounces of 40% spirits as one drink each.

A UK unit is smaller: 10 ml or 8 grams of pure alcohol, according to the NHS. A large 250 ml glass of 12% wine is 3 units, and a UK pint (568 ml) of 5.2% lager is about 3 units. One serving can hold more than one US standard drink or UK unit, because what counts is both the volume and the strength.

What did the large studies find?

In a 2018 analysis in The Lancet of 599,912 current drinkers without previous heart or circulation disease, in 83 studies from high-income countries, the lowest risk of death from any cause was at about 100 grams of alcohol a week or less. That is about seven US standard drinks, or 12.5 UK units.

The researchers estimated that, compared with people drinking up to 100 grams a week, those drinking 100 to 200 grams had about six months lower life expectancy at age 40, those drinking 200 to 350 grams had one to two years lower, and those above 350 grams had four to five years lower. The drinking was self-reported at the start, and the study observed people rather than assigning them an amount, so it shows links, not cause. Its authors concluded that the data support lower limits than most guidelines recommended at the time.

Who is advised not to drink at all?

The CDC says some people should not drink at all, even in moderation. Its list includes anyone who is or may be pregnant, anyone under 21 in the United States, people taking medicines that interact with alcohol, people with certain medical conditions, and people who find they cannot control how much they drink. The NIH adds times when it is safest to have none: before driving or operating machinery, and when trying to become pregnant.

If you have a health condition or take medicines, a doctor can tell you what applies to you. If you drink heavily every day, stopping all at once can be risky: talk to a doctor first. A local support service can also help, and in an emergency, contact your local emergency services.

What does the evening look like before the first drink?

If your first drink usually comes around six, after work, the question of "too much" is rarely asked at the table. It is decided earlier, in the kitchen, with the fridge open and the day still on your shoulders. The craving at that moment is just a feeling. Turning your attention outward, to the room and the next thing to do, is one way to meet it.

The other side of the decision is tomorrow at 7 am. A good morning is mostly what is missing: no sour stomach, no reason to scroll back through last night's messages, no wondering whether you were fine, the worry some people call hangxiety. A hangover can last most of the next day, so picturing that morning from the side of the person who will wake up is one way to decide the next hour.

Quick answers

Is a glass of wine a day too much?

A 175 ml glass of 12% wine every day adds up to about 14.7 UK units a week, just over the NHS weekly guideline of 14. Each glass is about 1.2 US standard drinks. Neither figure marks a risk-free amount.

Is 14 units a week safe?

The NHS gives it as the level to stay under to keep health risks low, not as a safe level, and the WHO says no level is free of risk.

Is drinking only at the weekend better?

It depends on how much goes into one sitting, because a weekly total does not show that. The NHS counts more than 8 units in a single session for men, or more than 6 for women, as binge drinking, which raises the risk of accidents and injuries, and it advises anyone who regularly drinks 14 units a week to spread them over three or more days.

Does a drink a day protect the heart?

This study cannot settle it, because it compared people who already drank rather than drinkers with non-drinkers. Among them, more alcohol was linked to a higher risk of stroke, heart failure and several other heart conditions, with heart attack the exception. The CDC notes that strong studies find about two drinks a day does not lower the risk of death compared with not drinking at all.

How can Morning Mirror help with the evening?

Morning Mirror is a drink less app for the evening: three minutes of audio before the first drink that show you tomorrow morning, so you decide from there. It does not count your drinks or set a limit for you; the numbers above are the public health bodies' own.