What alcohol costs you
Updated 2026-08-17
Alcohol, by the numbers
a week, about 100 g of alcohol, is roughly where measurable lifespan loss begins across 600,000 drinkers in 83 studies [1].
Life expectancy at age 40, by weekly drinks
Versus staying under about 7 drinks a week
Wood et al. [1], 599,912 current drinkers
The short version
- •In 600,000 drinkers across 83 studies, life expectancy at 40 fell smoothly as drinking rose above about 100 grams of alcohol a week, roughly 7 drinks: 1 to 2 years shorter around 18 drinks a week, 4 to 5 years shorter above 25 [1].
- •The famous J-curve, moderate drinkers outliving abstainers, largely dissolves when studies stop counting sick ex-drinkers as abstainers [2].
- •Alcohol is a Group 1 carcinogen linked to at least 7 cancer types, with an estimated 741,000 cancer cases a year worldwide attributable to drinking [3].
- •The same weekly total does more damage in binges than spread out, and alcohol deaths in younger adults are dominated by injuries from single heavy nights.
- •A month off pays fast: in a controlled study of a dry month, insulin resistance fell about 25%, and weight, blood pressure, and cancer-related growth factors all improved within weeks [4].
Alcohol is the most normalized drug on the longevity list, and the research on it has flipped harder than on any other item in the model. The protective glass of wine was an artifact of who got counted as an abstainer; the dose-response curve is real; and the good news is that the curve is smooth, which means every drink you skip buys measurable risk back. Here is what the evidence actually says, each with one thing you can do.
The line sits near 7 drinks a week
Pooling 599,912 current drinkers from 83 prospective studies, mortality risk rose smoothly above about 100 grams of pure alcohol a week, roughly 7 standard drinks. At age 40, drinking 18 or more a week predicted 1 to 2 fewer years of life, and more than 25 a week predicted 4 to 5 fewer [1].
Do this
Count one normal week honestly, in standard drinks. Most people have never done the arithmetic, and the number is usually a surprise in one direction or the other.
The protective glass was an artifact
Older studies compared drinkers against abstainer groups that included people who had quit because they were already sick. A meta-analysis of 107 studies correcting that bias found no mortality benefit from low or moderate drinking [2], and the Global Burden of Disease analysis concluded the level of drinking that minimizes overall health harm is zero [5].
Do this
Whatever you decide to drink, subtract "it is good for my heart" from the equation. Drink for pleasure and price it accordingly, not as medicine.
Pattern matters: binges cost extra
The same weekly volume concentrated into episodes is worse: in the Lancet pooled analysis, heavy episodic drinking carried additional cardiovascular risk beyond the weekly total, and alcohol deaths among younger adults are dominated by injuries, which cluster around single heavy nights.
Do this
Cap any single occasion at 3 drinks, with water between rounds. The cap protects you on exactly the nights the weekly average cannot.
The cancer connection is underrated
Alcohol is a WHO Group 1 carcinogen causally linked to cancers of the mouth, throat, esophagus, liver, colon, rectum, and breast. An estimated 741,000 new cancer cases in 2020 were attributable to alcohol worldwide, and about 1 in 7 of those came from light or moderate drinking [3].
Do this
Build at least 3 or 4 alcohol-free days into every week. Cancer risk tracks lifetime dose, so days off are exactly how you lower it.
It quietly taxes your sleep
Alcohol is a sedative that dismantles the sleep it starts: across 27 studies it shortened the time to fall asleep but suppressed REM and fragmented the second half of the night [6]. Poor sleep then drives next-day appetite and the next evening pour.
Do this
Keep drinks at least 3 hours away from bedtime. If you wear a sleep tracker, compare a week of dry nights against a week of nightcaps and let the data argue.
A dry month pays measurable dividends
In 94 moderate-to-heavy drinkers who abstained for one month, insulin resistance dropped about 25%, and weight, blood pressure, and cancer-related growth factors all improved, with none of those changes in the group that kept drinking [4]. Dry-month participants also drank less months later.
Do this
Run the experiment: one alcohol-free month, tracking sleep, mood, and waist. You get the health snapback now and, per the follow-up research, a lighter habit afterward.
If you drink, keep it boring
National guidance has converged downward: the UK Chief Medical Officers advise staying under 14 units a week, about 7 to 8 US drinks, spread across the week with several drink-free days, a limit chosen to keep lifetime alcohol-caused death risk near 1%.
Do this
Pick your weekly ceiling in advance, log drinks the way you would log workouts, and keep alcohol out of the house between occasions. Friction is the honest policy.
How to tell if yours is good
Signals you can read yourself, starting today, and what a good reading looks like.
Weekly count
Under about 7 standard drinks, counted, not guessed
Biggest night
No occasions over 3 drinks in a typical month
Drink-free days
At least 3 or 4 per week, without negotiating
Sleep
No regular nightcap; drinks end 3 or more hours before bed
Control
A dry month sounds easy, and the last one was
Check your own risk
6 quick questions about you, not the article. You get a personal readout of where your risks sit.
Pick an answer to reveal the numbers: check points for every answer (+2p working for you, +1p worth tightening, +0p elevated risk), plus life-model years where an answer maps to one (+0y = measured, no effect on its own).
1. In an honest week, how much alcohol do you actually drink?
2. Do you still think of moderate drinking as good for your heart?
3. How often do you have 4 or more drinks in one sitting?
4. Alcohol-free days in a normal week?
5. How often do you have alcohol within 3 hours of bedtime?
6. Could you take a month off alcohol without it being hard?
Now score your own
These two-minute quizzes turn this research into your numbers, and the years they are worth.
Go deeper in the Wiki
Sources
- [1]A. M. Wood et al. Risk thresholds for alcohol consumption: combined analysis of individual-participant data for 599 912 current drinkers in 83 prospective studies. Lancet, 391(10129):1513-1523, 2018. doi:10.1016/S0140-6736(18)30134-X Evidence: High
- [2]J. Zhao et al. Association Between Daily Alcohol Intake and Risk of All-Cause Mortality: A Systematic Review and Meta-analyses. JAMA Netw Open, 6(3):e236185, 2023. doi:10.1001/jamanetworkopen.2023.6185 Evidence: High
- [3]H. Rumgay et al. Global burden of cancer in 2020 attributable to alcohol consumption: a population-based study. Lancet Oncol, 22(8):1071-1080, 2021. doi:10.1016/S1470-2045(21)00279-5 Evidence: Moderate
- [4]G. Mehta et al. Short-term abstinence from alcohol and changes in cardiovascular risk factors, liver function tests and cancer-related growth factors: a prospective observational study. BMJ Open, 8(5):e020673, 2018. doi:10.1136/bmjopen-2017-020673 Evidence: Very low
- [5]GBD 2016 Alcohol Collaborators. Alcohol use and burden for 195 countries and territories, 1990-2016: a systematic analysis for the Global Burden of Disease Study 2016. Lancet, 392(10152):1015-1035, 2018. doi:10.1016/s0140-6736(18)31310-2 Evidence: Moderate
- [6]I. O. Ebrahim et al. Alcohol and sleep I: effects on normal sleep. Alcohol Clin Exp Res, 37(4):539-49, 2013. doi:10.1111/acer.12006 Evidence: Very low
- [7]UK Chief Medical Officers. Alcohol consumption: advice on low risk drinking. UK Government (GOV.UK), 2016. Evidence: Not graded (guideline)
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YapSpan estimates are for reflection and entertainment only. They are not medical advice, a diagnosis, or a prediction of any individual outcome. Check with a doctor before making any medical decision.