Summary: A comprehensive new review underscores the heavy global health burden caused by alcohol. The analysis finds that more than 60 diseases and injuries are fully attributable to alcohol use.
Although stopping or reducing drinking can reverse or slow some short-term and cardiovascular harms, the authors conclude that alcohol remains a leading cause of illness and injury, and its overall harms clearly outweigh any possible benefits.
Key Facts
- Conditions fully caused by alcohol: The World Health Organization’s ICD‑11 identifies over 60 conditions entirely attributable to alcohol exposure, including alcoholic cardiomyopathy, alcohol-related liver disease such as cirrhosis, and fetal alcohol spectrum disorders.
- Greater susceptibility to infections: Alcohol impairs liver function and weakens immune responses, increasing the likelihood of infectious diseases such as tuberculosis, pneumonia, and HIV/AIDS.
- Widespread systemic harms: Alcohol contributes to multiple non-communicable disease categories, including certain cancers, cardiovascular disease, type 2 diabetes, neuropsychiatric disorders, and gastrointestinal illnesses.
- Partial reversibility: Some risks fall quickly after stopping alcohol—injury risk tied to intoxication drops immediately and several cardiovascular markers can improve within weeks—while chronic organ damage, such as advanced cirrhosis, is often irreversible or only partially reversible.
Source: Society for the Study of Addiction
A new review published in the journal Addiction confirms that alcohol consumption produces substantial harm to health.
Many of these harms can be reduced or halted when people cut down or stop drinking, but some effects—particularly chronic organ damage—may persist.
- More than sixty conditions are fully attributable to alcohol: ICD‑11 expands the list of wholly alcohol-caused conditions to 62 (up from 48 in ICD‑10), covering disorders such as alcoholic cardiomyopathy, alcohol-induced liver disease, and fetal alcohol syndrome. These conditions are most commonly linked to heavy or prolonged drinking.
- Alcohol raises the risk of several infections: Reviews show alcohol increases vulnerability to infections—tuberculosis, pneumonia, HIV/AIDS and other sexually transmitted infections—because it damages liver function and weakens immune defenses.
- Non-communicable diseases linked to alcohol: Alcohol is a contributing factor across five major categories of non-infectious disease:
- Cancers: oral cavity, pharynx, larynx, oesophagus, colon, rectum, liver, breast, and cervix
- Cardiovascular disease: hypertension, cardiomyopathy, ischemic heart disease, atrial fibrillation, stroke
- Type 2 diabetes
- Neuropsychiatric disorders: dementia, epilepsy
- Gastrointestinal disease: liver cirrhosis, pancreatitis
- Alcohol contributes to many injuries: Even relatively low alcohol intake impairs balance, reaction time, and decision-making, raising the risk of accidents. Injury risk varies with consumption level and context (environment, activity, co-use of other substances). Alcohol increases the likelihood of traffic accidents, falls, violence, and harm to others.
Some harms decline after stopping or reducing alcohol use:
- Short-term risks tied to intoxication—such as accidents and some sexually transmitted infections—fall quickly when drinking stops.
- Alcohol temporarily weakens immune function; the immune system can recover after abstinence, although long-term heavy use may cause lasting impairment.
- Many chronic alcohol-related conditions are not fully reversible. Nevertheless, cutting consumption slows disease progression and can produce measurable cardiovascular improvements within days to weeks.
- Brain injury from heavy drinking may partially improve with prolonged abstinence, but risks such as cognitive decline or dementia can remain.
Senior author Dr. Jürgen Rehm, Senior Scientist at the Canadian Centre for Addiction and Mental Health (CAMH), notes that debate continues over whether small amounts of alcohol may benefit heart health.
“When we compare cohort studies and Mendelian randomisation studies, accounting for their respective strengths and biases, the evidence does not definitively rule out a small protective effect for ischaemic heart disease and ischaemic stroke,” Dr. Rehm says.
First author Sinclair Carr adds: “Our careful review of current evidence leads to a clear and cautious conclusion: alcohol is a major cause of disease and injury, and on balance its harms outweigh any potential benefits.”
Sinclair Carr is a PhD candidate in the Department of Epidemiology at the Harvard T.H. Chan School of Public Health.
Funding information Research reported here 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 necessarily represent official NIAAA or NIH positions.
Key Questions Answered:
A: The evidence is mixed. Cohort studies sometimes show a slight lower risk of ischaemic heart disease and stroke at low-to-moderate intake, but genetic (Mendelian randomisation) studies often do not support a protective effect. The review concludes that, overall, alcohol’s harms outweigh any potential cardiovascular benefits.
A: You’ll see benefits quickly: risks associated with intoxication drop, transient immune suppression recovers, and some cardiovascular measures can improve within days to weeks of abstinence.
A: It depends on how advanced the damage is. Early-stage injury and some liver functions can recover after stopping alcohol, but advanced cirrhosis and scarring are usually not fully reversible. Reducing or quitting alcohol is still vital to slow further progression.
Editorial Notes:
- This article was edited by a Neuroscience News editor.
- The full journal paper was reviewed for this summary.
- Staff provided additional context to clarify findings.
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: The image is credited to 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
A review of the relationship between dimensions of alcohol consumption and the burden of disease: 2026 update including Mendelian randomisation studies
Background and aims
Evidence about how different patterns and amounts of alcohol consumption cause specific health outcomes continues to develop, with some inconsistency across study methods. This review updates causal and risk estimates to inform global and national comparative risk assessments for alcohol.
Methods
Fully alcohol-attributable conditions were identified using ICD‑10 and ICD‑11 codes. The authors conducted a scoping review of 56 meta-analyses of cohort studies on average alcohol consumption and health outcomes, a systematic review of 20 Mendelian randomisation studies focused on ischaemic heart disease, and narrative syntheses addressing injuries, biological pathways, and reversibility.
Results
ICD‑11 provides more detailed categories, listing 62 fully alcohol-attributable conditions versus 48 in ICD‑10. Meta-analyses generally show a monotonic increase in risk with higher average alcohol consumption for many infectious diseases, cancers, cardiovascular and digestive disorders.
For ischaemic heart disease, ischaemic stroke, and type 2 diabetes, relationships are often J-shaped—lower risk at low-to-moderate consumption but higher risk with heavy or binge drinking. For dementia, heavy drinking is harmful, while effects among non-heavy drinkers vary by age. Mendelian randomisation studies mostly report null or harmful effects for ischaemic heart disease, but only a few tested non-linear associations. Overall, the current MR evidence does not definitively refute a possible J-shaped relationship for ischaemic heart disease.
Injury risk is driven largely by acute intoxication and includes substantial harms to bystanders. Acute risks are reversible with reduced drinking or abstinence, whereas many chronic disease processes are only partly reversible.
Conclusions
While epidemiological evidence for alcohol-related risks is extensive, significant limitations remain. Combining multiple study designs and biological plausibility improves confidence in causal interpretations. Future research should use frameworks that reduce design biases. For now, comparative risk assessments for ischaemic heart disease should primarily rely on cohort study evidence.