“Safe” is a word we attach to things we’ve stopped questioning.
Most of us understand how alcohol has become deeply embedded in many parts of British culture. We often automatically apply “safe” to drinking because it is so commonplace.
And yet, the health risks when drinking can start from the moment the first drop enters your body.
This article examines what the UK ‘safe limits’ on drinking actually say, what they don’t, and what the numbers look like in the real-world. We hope this provides a reference point in your endeavour for sober, healthier living.
What are alcohol safe limits?
“Alcohol safe limits” is a quantity most people wonder about when trying to calculate whether they’re drinking too much. It’s a phrase that feels natural to ask, but it could do with a small clarification before anything else.
The UK’s Chief Medical Officers’ guidelines, last revised in 2016, deliberately moved away from the word “safe”. The official position is that there is no completely risk-free level of regular drinking. What the guidelines do offer is a “low-risk” threshold, below which your risk of long-term harm stays low.
When we talk about “alcohol safe limits” throughout this guide, we mean low-risk drinking levels, and that’s important because it helps reshape inaccurate terminology.
UK alcohol guidelines explained
To understand how much alcohol is safe, we should start with the government-suggested guidelines. The Chief Medical Officers’ alcohol consumption guidelines set the same recommended alcohol limits in the UK for men and women. Both are advised to drink no more than 14 units of alcohol a week, giving us our weekly alcohol units ceiling.
Three other points sit alongside that 14-unit ceiling:
- Spread your drinking across at least three days, rather than saving it all for one or two.
- Have several drink-free days each week.
- If you choose to drink during pregnancy or while trying to conceive, the safest approach is not to drink at all.
The guidance describes 14 weekly alcohol units as a ceiling, rather than a target. Drinking less than 14 units is associated with a lower risk than drinking up to 14, and not drinking at all is associated with a lower risk than drinking.
What counts as a unit of alcohol?
A unit is a standardised measure of pure alcohol. One unit equals 10 millilitres or 8 grams of pure alcohol, which is roughly what the average adult body processes in an hour.
You can work out the units in any drink by multiplying its strength (the alcohol by volume, or ABV percentage) by its size in millilitres, then dividing by 1,000.
Here’s how that works out for common drinks under the alcohol units UK guidelines:
- A pint of 4% lager: 2.3 units
- A pint of 5.2% beer: 3 units
- A small (125ml) glass of 12% wine: 1.5 units
- A large (250ml) glass of 13% wine: 3.3 units
- A 750ml bottle of 12% wine: 9 units
- A 25ml single shot of 40% spirits (England, Wales, Northern Ireland): 1 unit
- A 35ml single shot of 40% spirits (Scotland): 1.4 units
Drinkaware offers a free alcohol unit calculator that will work it out for any drink you enter.
Interested to know more about alcohol addiction?
Is there a truly ‘safe’ level of drinking?
No. Risk exists on a sliding scale, and 14 units is the point at which that scale starts to rise more sharply.
Research the Chief Medical Officers reviewed in 2016 found that any regular drinking carries some risk of long-term harm. That risk is small at low levels and gets bigger as weekly consumption rises. For some conditions, including certain cancers, even small amounts of alcohol increase risk.
This isn’t meant to scare-monger anyone away from a small amount of drinking on a night out. It’s a push of honesty, explaining how “safe drinking levels” is a phrase used for convenience over accuracy. If you’ve been drinking under 14 units a week, we can say that risk stays low, just not zero.
How drinking patterns affect risk
Total weekly intake is not the only thing that matters. How you drink across a week has its own effect on risk.
Drinking 14 units across one or two heavy nights carries more risk than the same 14 units spread across the week. Heavy single sessions, sometimes called binge drinking, raise short-term risks like acute alcohol poisoning or general injuries. They also raise longer-term risks for the heart and liver, even if your weekly total sits within the guidelines.
The UK definition of binge drinking is 6 units or more in one session for women, and 8 units or more for men. For most people, that’s around three large glasses of wine, or three pints of strong beer.
Drink-free days matter for similar reasons. They give your liver time to recover, and they keep drinking from becoming a recurring pattern, one of the clearest steps towards dependence.
Signs you may be drinking more than intended
When speaking with friends or loved ones, some people can honestly state how much they’re drinking. Yet when it comes to deep and honest reflection and professional health concerns, many people underestimate how alcohol is in their life.
There can be very quiet signs that drinking may have slipped beyond what you’d planned, and noticing them is essential. These are the patterns our staff and clinicians see most often in people whose drinking has drifted:
- You finish a bottle of wine on your own across an evening without really noticing.
- Drinks at home are getting larger, but you still count them as “a glass”.
- You drink earlier in the day than you used to, or earlier than you’d want to admit.
- You plan your week around when you can or can’t drink.
- It’s harder to stop after one or two than it used to be.
- You drink to take the edge off the day, rather than for the taste or the occasion.
- You feel a low-level guilt the morning after, more often than you used to.
If several of these feel familiar, that is worth sitting with. It doesn’t mean anything is wrong. But it does mean your relationship with alcohol may have shifted without you noticing.
“I contacted Castle Health [formerly CATCH Recovery] seeking guidance and options to support a relative who was having a difficult time both with addiction and other mental health concerns. The team were incredibly kind and informed, they took the time to go through all the options with me and helped us plan how to approach the matter. Fortunately the person has now been receiving care from [Castle] for several months and is doing really well. A big thank you to the wonderful team. I would highly recommend this service.”
When to consider cutting down or seeking help
If you’re drinking above the recommended alcohol units UK guidelines and want to reduce, small changes tend to stick better than dramatic ones. Switching to smaller measures, having a soft drink or glass of water between each drink, setting a weekly budget, and choosing two or three drink-free days are the changes most people find sustainable.
Speak to your GP if any of the following apply:
- You drink more than 30 units a week.
- You have tried to cut down before and found it harder than expected.
- You experience shakes or sweats the morning after drinking.
- You drink to manage how you feel, rather than to enjoy yourself.
- Alcohol is affecting your sleep, your work, or the people closest to you.
Cutting down alone is manageable for some people. For others, professional support can make the difference between trying and sustaining. That support ranges from your GP and short-course counselling through to residential addiction treatment.
If you’re worried about someone you know
Most people underestimate how much they drink. The signs below are worth noticing – not because any one of them means something is wrong, but because they’re easy to miss in yourself.
A few things tend to help:
- Choose a quiet moment, not the middle of a drink or an argument. Conversations land differently when both people are calm.
- Speak about what you have concretely noticed, rather than what you have decided. “I’ve noticed you’re drinking earlier in the day” tends to land better than “you are drinking too much”.
- Let them know you are worried, and leave the door open without pushing through it.
- Look after yourself too. Watching someone you know change their relationship with alcohol can quietly affect your own wellbeing.
We offer family therapy as part of our wider alcohol addiction treatment at Castle Health, and this is for anyone supporting a person whose drinking has become a concern. Reach out to us today for the first step towards a brighter, sober future.
Frequently asked questions about safe drinking
How many units can I drink per week?
Recommended alcohol limits UK is no more than 14 units of alcohol per week for both men and women. That is roughly six 175ml glasses of average-strength wine, or six pints of standard-strength lager. The guidance also suggests spreading your drinking across at least three days, and including several drink-free days.
What is low-risk drinking?
“Low-risk drinking” describes a level of alcohol consumption associated with the smallest realistic chance of long-term harm. Under low risk drinking UK guidance, that is 14 units or fewer per week, spread across the week, with regular drink-free days. The term replaced “safe drinking” in official UK guidance because no level of regular drinking is completely free of risk.
Are some drinks safer than others?
Not really. The harm caused by alcohol comes from the alcohol itself, not the type of drink. A pint of strong beer and a large glass of wine contain similar amounts of alcohol, and both carry similar risks. What counts is how much pure alcohol you drink, and how often.
How do I calculate alcohol units?
Multiply the drink’s strength (ABV %) by its volume in millilitres, then divide by 1,000. A 568ml pint of 5% beer works out at 2.8 units. Drinkaware offers a free unit calculator that will do the maths for any drink you enter.
