Is alcohol part of a healthy lifestyle? What the current evidence actually says
- Joyce Knieff, ND, LAc
- 1 day ago
- 5 min read
For years, the story told around dinner tables was that a glass of red wine with the meal was good for the heart. Medscape just ran a piece walking through how much that story has shifted, and the shift is one of the cleaner examples of what happens when better methods are applied to an old question. The headline is not new. The supporting evidence underneath the headline is.
What the research found
The longstanding "J-shaped curve" idea, the one suggesting moderate drinkers live longer than non-drinkers, was built on cohort studies that mostly compared current drinkers to current non-drinkers. The problem is that the non-drinker group has historically been a mix of people who never drank and people who stopped drinking, often because they were already sick. This grouping made moderate drinking look healthier than it was.
A 2023 systematic review and meta-analysis in JAMA Network Open by Zhao and colleagues pooled 107 cohort studies covering nearly 4.8 million participants and 425,564 deaths, and applied statistical adjustments to correct for that abstainer-bias problem. Once they adjusted, the supposed protective effect of low-volume drinking on all-cause mortality disappeared. Occasional drinking (less than 1.3 grams of ethanol per day) showed no significant mortality benefit. Low-volume drinking (1.3 to 24 grams per day) showed no significant mortality benefit either. Mortality risk started climbing at 25 to 44 grams per day and rose more steeply above that, with women showing increased risk at lower thresholds than men.
A 2022 systematic review in BMC Medical Research Methodology asked the question differently. It looked specifically at studies that used Mendelian randomization and other tools designed to mitigate confounding. The conclusion was that once you tighten the methodology, the J-curve becomes much less consistent across outcomes. Some outcomes still show non-linear relationships. Many do not. The protective story is less robust than it was made to sound.
A separate 2023 meta-analysis in Public Health by Burton and colleagues examined what happens when alcohol use is combined with smoking and excess body weight. The risks are synergistic, not just additive. The combined effect of alcohol and smoking on head and neck cancer was 3.78 times greater than what each exposure would predict separately. For liver disease, the combined effect of alcohol and excess weight was 1.55 times greater than additive.
The bigger picture
These three papers, taken together, say something the popular media has been slow to absorb. There is no demonstrated cardiovascular or longevity benefit to moderate drinking once the methodology is cleaned up. Alcohol's risks for several cancers, including breast, head and neck, esophageal, liver, and colorectal, are dose-dependent and start at low intakes. The risks rise faster in women than in men. They rise faster in people who carry other risk factors, especially smoking and excess weight.
That does not mean every drink causes harm in a measurable way for every person. It means the population-level case for "moderate drinking is good for you" is no longer supported by the best evidence, while the case for "above a certain threshold, the harm scales" is increasingly clear.
The World Health Organization's current position, restated in 2023, is that no level of alcohol consumption is safe for health. That is a public health statement, calibrated to population risk. For an individual, the picture is more nuanced and depends on age, sex, family history, medications, and what alcohol is replacing in the diet.
The naturopathic lens
In clinic I work with a lot of women whose alcohol intake landed in the "supposedly fine" zone for years, who are now facing breast cancer risk conversations, sleep disruption, perimenopause, or rising liver enzymes. The framing they grew up with told them a glass of wine a night was reasonable. The current evidence does not back that up.
Naturopathic medicine has always treated alcohol as a substance with real physiological effects, not a neutral social lubricant. It is a sleep disruptor. It is a liver burden. It raises estrogen metabolism in ways that matter for breast and uterine tissue. It dehydrates. It affects the gut microbiome. It interacts with many medications and many supplements. None of that is news. What is newer is that the cardiovascular consolation prize, the J-curve that justified a daily glass, looks much smaller than it did.
This does not mean I lecture patients about a beer with friends. It does mean I am clearer when people ask me what the evidence actually shows. The evidence shows that less is consistently better, that women metabolize alcohol differently, that drinking pattern matters as much as total amount, and that the cleanest version of a heart-healthy or longevity-supporting diet does not require alcohol to make it work.
How to apply this now
If you drink, know your numbers. A standard drink in the U.S. is roughly 14 grams of ethanol. That is 12 ounces of regular beer, 5 ounces of wine, or 1.5 ounces of distilled spirits. Most pours at home are bigger than these standards.
If you are using a daily drink to wind down or sleep, the alcohol is probably making your sleep worse over time. The first half of the night feels easier; the second half is fragmented and shallow. Track it for a few weeks and see.
If you have a family history of breast cancer, a personal history of liver disease, are perimenopausal, or take medications that interact with alcohol, the threshold at which alcohol becomes a real liability for you is lower than the population average. Talk to your provider.
If you want a cardiovascular or longevity reason to drink, the evidence is not there to support it. If you want a social reason, that is a different conversation, and the right answer depends on you, your values, and your overall risk picture.
The old story is being retired carefully, with better methodology behind it. The new picture is not preachy. It is precise. And precise is what you want when the question is what to do with your own one body.
References
Zhao J, Stockwell T, Naimi T, et al. Association between daily alcohol intake and risk of all-cause mortality: a systematic review and meta-analyses. JAMA Netw Open. 2023;6(3):e236185. PMID: 37000449. doi:10.1001/jamanetworkopen.2023.6185.
Visontay R, Sunderland M, Slade T, Wilson J, Mewton L. Are there non-linear relationships between alcohol consumption and long-term health? A systematic review of observational studies employing approaches to improve causal inference. BMC Med Res Methodol. 2022;22(1):16. PMID: 35027007. doi:10.1186/s12874-021-01486-5.
Burton R, Fryers PT, Sharpe C, et al. The independent and joint risks of alcohol consumption, smoking, and excess weight on morbidity and mortality: a systematic review and meta-analysis exploring synergistic associations. Public Health. 2023;226:39-52. PMID: 38000113. doi:10.1016/j.puhe.2023.10.035.
Disclaimer
This article is for educational purposes only. It is not medical advice, does not create a clinician-patient relationship, and is not a substitute for individualized care from your own provider. If you struggle with alcohol use, please reach out for support. In the U.S., SAMHSA's National Helpline is 1-800-662-4357, available 24/7 and free. Do not start, stop, or change any treatment based on what you read here.
If this resonates with what you're experiencing and you'd like to explore a naturopathic approach, book a consultation with our clinic.