Summary: A new comprehensive review reaffirms the significant burden alcohol places on global health. The analysis identifies more than 60 diseases and injuries that are entirely attributable to alcohol, and it highlights widespread, systemic harms that outweigh any potential benefits of drinking.
Although some short-term harms and certain cardiovascular markers can improve after reducing or stopping alcohol consumption, the review’s authors conclude that alcohol remains a major driver of disease and injury worldwide.
Key Facts
- Fully attributable conditions: The World Health Organization’s ICD‑11 identifies over 60 diseases and injuries entirely caused by alcohol, including alcoholic cardiomyopathy, alcoholic liver disease (such as cirrhosis), and fetal alcohol spectrum disorders.
- Increased infection risk: Alcohol impairs liver function and weakens immune responses, making people more susceptible to infections such as tuberculosis, pneumonia, and HIV/AIDS.
- Widespread systemic harms: Alcohol contributes to multiple categories of non-communicable diseases, including many cancers, cardiovascular disease, type 2 diabetes, neuropsychiatric conditions (such as dementia and epilepsy), and gastrointestinal disorders like pancreatitis.
- Conditional reversibility: Some short-term risks decline rapidly with abstinence, yet chronic organ damage — for example, advanced cirrhosis — is often only partially reversible or permanent.
Source: Society for the Study of Addiction
A major review, published in the journal Addiction, confirms that alcohol consumption causes widespread and sometimes irreversible harm to health.
Many of the harms are dose-dependent and tied to patterns of drinking; heavy and episodic heavy drinking produce the greatest risks. Some harms diminish when drinking is reduced or stopped, but others persist and can continue to affect quality of life and long-term survival.
- Over sixty conditions are fully attributable to alcohol: ICD‑11 expands alcohol‑attributable categories, now listing more than 60 conditions fully caused by alcohol — many linked to sustained heavy drinking, such as alcoholic cardiomyopathy, alcoholic liver disease, and fetal alcohol spectrum disorders.
- Alcohol increases infectious disease risk: Multiple reviews show alcohol raises the chance of infections, including tuberculosis, pneumonia, HIV/AIDS, and other sexually transmitted infections, by damaging liver function and weakening immunity.
- Non-communicable diseases linked to alcohol: Alcohol is a contributing factor across five broad non-communicable disease groups:
- Cancers: mouth, pharynx, larynx, esophagus, colon, rectum, liver, breast, and cervix;
- Cardiovascular disease: hypertension, cardiomyopathy, ischemic heart disease, atrial fibrillation, and stroke;
- Type 2 diabetes;
- Neuropsychiatric disorders: dementia and epilepsy;
- Gastrointestinal disease: liver cirrhosis and pancreatitis.
- Alcohol-related injuries: Even low levels of alcohol impair balance, reaction time, and judgment, increasing the risk of traffic crashes, falls, violence, and other injuries. Injury risk depends on amount consumed and contextual factors such as environment, activity, and concurrent substance use, and it can cause substantial harm to others as well as to the drinker.
Which harms are reversible?
- Short-term harms that occur primarily during intoxication — including injuries and some sexually transmitted infections — decline quickly once drinking stops.
- Alcohol temporarily suppresses immune function; immune recovery often follows abstinence, though long-term heavy drinking can cause more lasting damage.
- Chronic conditions such as advanced cirrhosis and some forms of heart disease are not fully reversible, but reducing or stopping alcohol intake can slow progression and improve outcomes; some cardiovascular markers improve within days to weeks of abstinence.
- Brain injury from heavy drinking may partially recover over time with prolonged abstinence, but risks like dementia can remain elevated.
Senior author Dr. Jürgen Rehm of the Canadian Centre for Addiction and Mental Health notes that, despite extensive evidence on alcohol’s harms, debate continues over whether modest consumption might offer protective effects for certain heart conditions. After reviewing cohort studies and Mendelian randomization studies, the authors state that current genetic evidence is not sufficient to overturn cohort findings suggesting a possible lower risk of ischemic heart disease and ischemic stroke at low-to-moderate consumption — but this potential benefit does not negate the broader and larger harms of alcohol.
First author Sinclair Carr, a PhD candidate at the Department of Epidemiology, Harvard T.H. Chan School of Public Health, summarizes the review’s position: alcohol is a major cause of disease and injury, and its overall harms outweigh any potential benefits.
Funding information Research reported in this publication was supported by the National Institute on Alcohol Abuse and Alcoholism (NIAAA), grant number 1R01AA028224. The content is the responsibility of the authors and does not represent official positions of the NIAAA or the National Institutes of Health.
Key Questions Answered:
A: The evidence remains mixed. Some cohort studies suggest a possible small protective effect for ischemic heart disease and stroke at low-to-moderate intake, but genetic (Mendelian randomization) studies often find no benefit or suggest harm. Overall, the totality of evidence and the breadth of alcohol’s harms make any potential cardiovascular benefit unlikely to offset risks elsewhere.
A: You gain an immediate health break: short-term intoxication-related risks fall, immune function recovers from temporary suppression, and some cardiovascular markers can improve within days to weeks of abstinence.
A: Recovery depends on stage. Early liver damage and immune dysfunction can improve after stopping drinking, but advanced cirrhosis usually involves permanent scarring. Quitting alcohol slows progression and can prevent further deterioration.
Editorial Notes:
- This article was edited by a Neuroscience News editor.
- The journal paper was reviewed in full.
- Additional context was added by editorial staff for clarity.
About this health and addiction research news
Author: Jean O’Reilly
Source: Society for the Study of Addiction
Contact: Jean O’Reilly – Society for the Study of Addiction
Image: Image credit: Neuroscience News
Original Research: Open access. “A review of the relationship between dimensions of alcohol consumption and the burden of disease: 2026 update including Mendelian randomisation studies” by Sinclair Carr, Ana Lucia Espinosa Dice, Gerhard E. Gmel Sr., Ahmed S. Hassan, Kevin D. Shield, Jürgen Rehm. Addiction. DOI: 10.1111/add.70435
Abstract
Title: A review of the relationship between dimensions of alcohol consumption and the burden of disease: 2026 update including Mendelian randomisation studies
Background and aims
Research into how different amounts and patterns of alcohol consumption cause or influence disease continues to evolve, with some conflicting findings across study types. This review updates the evidence on causality and risk relationships to guide global and national comparative risk assessments for alcohol.
Methods
The authors identified fully alcohol-attributable conditions using ICD‑10 and ICD‑11 codes, conducted a scoping review of 56 meta-analyses of cohort studies on average consumption and health outcomes, systematically reviewed 20 Mendelian randomisation studies addressing alcohol and ischemic heart disease, and provided narrative syntheses on injuries, biological mechanisms, and reversibility of effects.
Results
ICD‑11 defines 62 fully alcohol-attributable conditions, up from 48 in ICD‑10. Meta-analyses generally show dose–response increases in risk with higher average consumption across infectious diseases, cardiovascular diseases, cancers, and digestive diseases. Some relationships are J-shaped — for example, ischemic heart disease, ischemic stroke, and type 2 diabetes — indicating lower risk at low-to-moderate consumption provided heavy episodic drinking is absent. Mendelian randomisation studies for ischemic heart disease largely report null or harmful effects, but non-linear effects were rarely tested. Injury risk is primarily driven by acute intoxication and includes harm to others; acute risks are reversible with reduced drinking, whereas many chronic processes are only partially reversible.
Conclusions
Epidemiological evidence to inform alcohol comparative risk assessments is extensive but has notable limitations. Integrating results from cohort and Mendelian randomisation studies, underpinned by biological plausibility and triangulation approaches, can improve causal inference. For now, comparative risk assessments concerning ischemic heart disease should prioritize cohort study evidence while acknowledging study design limitations.