A complex picture emerges from recent large-scale studies: high alcohol intake universally increases health risks, but findings for low-to-moderate consumption are mixed, with some research indicating cancer risks and other studies suggesting potential benefits depending on the beverage type.
A series of recently published studies analyzing large datasets and existing research has examined the relationship between alcohol consumption and health outcomes. The findings vary by consumption level, health outcome measured, and beverage type.
IHME Study: Comprehensive Cancer Risk Analysis
A study from the Institute for Health Metrics and Evaluation (IHME) at the University of Washington, published in Nature Health, analyzed the relationship between alcohol consumption and 20 major health outcomes. The study used the Burden of Proof meta-analytic framework and examined 843 cohort and case-control studies published through 2023.
Key findings include:
- Alcohol use was associated with increased risk for all ten cancers examined, with risk rising as consumption increased.
- Consumption below one standard drink per day (less than 10 grams of pure alcohol) was associated with elevated risk for cancers of the pharynx, colorectum, esophagus, breast, liver, pancreas, and prostate.
- For pharyngeal cancer (excluding nasopharyngeal), risk increased by at least 105% at average consumption levels.
- Cancers of the larynx, colorectum, and lip and oral cavity showed risk increases of at least 22% to 49%.
- Alcohol use was linked to at least a 40% increase in risk for cirrhosis and other chronic liver diseases, and at least a 22% increase for pancreatitis.
- Weaker evidence suggested higher risk for lower respiratory infections and tuberculosis.
- The study found no systematic differences in alcohol-health relationships by sex.
Non-cancer outcomes showed varied results:
- For type 2 diabetes and Alzheimer's disease and other dementias, low-to-moderate alcohol intake was associated with a small reduction in risk (at least 4.5% and 6.4%, respectively).
- For ischemic heart disease, ischemic stroke, and hemorrhagic stroke, evidence of lower risk at low-to-moderate intake was inconsistent, but risk increased at higher levels.
- Atrial fibrillation and flutter showed at least a 6% increase in risk.
SAMHSA-Commissioned Study: Recommendation for One Drink Per Day
A study commissioned by the federal government and published independently in the Journal of Studies on Alcohol and Drugs recommends that Americans limit alcohol consumption to no more than one drink per day. The study was conducted by the Substance Abuse and Mental Health Services Administration (SAMHSA) as part of an update to U.S. dietary guidelines.
Key findings include:
- Men consuming more than 6.5 drinks per week and women consuming more than seven drinks per week face a greater than 1-in-1,000 lifetime risk of dying from an alcohol-related disease or injury.
- At more than 8.5 drinks per week, the risk exceeds 1 in 100 for both sexes.
- At 14 drinks per week, the lifetime risk is about 1 in 25.
- Daily drinking was linked to increased risks of dying from liver cirrhosis, several cancers (oral, pharyngeal, laryngeal, esophageal, colon, liver, and breast), and injuries, compared to never drinking.
- A lower risk of dying from ischemic stroke and ischemic heart disease was noted, but the researchers stated that the protective effect is negated by occasional binge drinking.
- The researchers found no protective effect of alcohol on mortality at any consumption level when considering all health outcomes.
Dispute over study's use: Robert Vincent, a former SAMHSA alcohol policy official who led the study, accused the Trump administration of "sidelining" the research. Vincent was laid off as part of a government reduction in force. Emily Hilliard, a spokesperson for the U.S. Department of Health and Human Services (HHS), stated that the agency followed the established process for developing the dietary guidelines and denied that the study was not considered. Vincent claimed he was asked to "kill the study" while working under the Trump administration; HHS did not respond to that claim. The alcohol industry and a House oversight committee criticized the study, with the committee releasing a report calling it "fraught with bias."
The U.S. dietary guidelines, updated in January 2025, recommend that Americans "consume less alcohol for better overall health," but do not specify a limit.
Beverage-Specific Study: Differential Impacts by Alcohol Type
A study presented at the American College of Cardiology's Annual Scientific Session (ACC.26) suggests that while high alcohol intake is associated with worse health outcomes universally, the impacts of low to moderate intake may vary by beverage type.
The study analyzed alcohol consumption and mortality outcomes in 340,924 British adults from the UK Biobank study between 2006 and 2022. Participants completed a dietary questionnaire and were categorized by daily and weekly pure alcohol intake. One standard drink contains approximately 14 grams of pure alcohol. Health outcomes were tracked for an average of over 13 years.
Key findings include:
- High Consumption: Individuals with high alcohol consumption exhibited a 24% increased likelihood of death from any cause, a 36% increased likelihood of cancer-related death, and a 14% increased likelihood of heart disease-related death compared to never or occasional drinkers.
- Low to Moderate Consumption - General Mortality: At low and moderate intake levels, consuming spirits, beer, or cider was associated with a higher risk of death. Conversely, wine consumption at similar levels was associated with a lower risk of death.
- Low to Moderate Consumption - Cardiovascular Disease Mortality: Moderate wine drinkers had a 21% lower risk of dying from cardiovascular disease compared to never or occasional drinkers. In contrast, even low intake of spirits, beer, or cider was associated with a 9% higher risk of cardiovascular disease mortality.
Potential explanations suggested by researchers include:
- Red wine contains compounds like polyphenols and antioxidants, which may offer cardiovascular benefits.
- Wine is often consumed with meals and by individuals tending towards higher-quality diets and healthier lifestyles.
- Spirits, beer, and cider are more frequently consumed outside of meals and were associated with lower overall diet quality and other lifestyle risk factors.
Study limitations cited by the researchers include its observational nature (which cannot establish causation), reliance on self-reported alcohol consumption at baseline, and the general healthiness of UK Biobank participants, which may limit generalizability. The study's large sample size and extended follow-up period were noted as strengths that enhance statistical power.
Scientific Context and Broader Research
The SAMHSA study's findings align with a 2019 Lancet study that found moderate drinking slightly raised the risk of stroke and high blood pressure with no protective health benefits. Older studies suggesting moderate drinking had heart benefits are now considered by some researchers to be flawed due to confounding factors such as education and income.
A separate review led by the National Academies of Sciences, Engineering, and Medicine found moderate drinking associated with lower all-cause mortality but increased breast cancer risk.
Previous research published in BMJ Evidence-Based Medicine highlighted a link between greater alcohol consumption and higher dementia risk. Another study using brain scans found that consuming one to two units of alcohol daily was associated with reductions in brain volume and structural changes, which may be connected to memory loss and dementia.
Implications and Limitations
The authors of the IHME study noted that drinking guidelines should be informed by up-to-date evidence across the full range of health outcomes, discourage heavy episodic drinking, and communicate that even low-to-moderate intake is associated with elevated cancer risk. They also noted low public awareness of alcohol's link to cancer, particularly breast and colorectal cancer.
Researchers across studies acknowledged individual risk varies based on lifestyle, genetics, and drinking patterns. Ongoing research continues to identify additional alcohol-related health conditions, such as pancreatic cancer. The beverage-specific study authors stated that randomized trials are needed to further understand the effects observed.