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Alcohol is one of the most dangerous drugs known to medicine. Yet, its presence is ubiquitous in social settings and celebrations. Few substances are as deeply woven into everyday life as alcohol. It is a standard fixture at holiday parties, work gatherings, sporting events, and even airport lounges. You see it at brunch or dinner tables. A raised glass for a toast is a universal sign of celebration. The open bar at a wedding or drinks shared during a Fourth of July party demonstrate how deeply alcohol has become embedded in social customs.
Despite this cultural acceptance, alcohol contributes to millions of deaths globally each year. It is linked to cancer, liver disease, unintentional accidents, violence, and addiction. The disconnect between alcohol’s role in our culture and its serious health burden is striking. Although drinking patterns vary by country, an estimated 2.3 billion people worldwide consume alcohol. This global habit persists despite the well-documented risks.
As a physician working in addiction medicine, I regularly care for patients whose alcohol use affects nearly every organ system. It is often not until these patients end up admitted to the hospital that they learn the impact of alcohol on parts of their body besides the liver. They discover that the damage is systemic, not isolated.
Newer evidence challenges long-held assumptions about what was considered “safe drinking.” Even moderate drinking carries risk. It is not as harmless as people, including medical experts, once thought.
Many people associate alcohol risk primarily with addiction or legal complications, such as driving while intoxicated. However, the effects of alcohol extend far beyond these issues. They touch nearly every aspect of a person’s well-being.
While alcohol may transiently improve mood and ease social anxiety, long-term use can lead to a worsening of mood, cognition, and sleep. These negative changes can further compound the urge to drink, creating a difficult cycle. A 2021 literature review found that consuming approximately two standard drinks roughly doubles the odds of sustaining both motor vehicle and non-motor vehicle injuries. The review also found that heavy episodic drinking, known as binge drinking, can increase the risk of injury by 20- to 50-fold. This depends on the amount of alcohol consumed and the type of injury.
While alcohol’s effects on the liver are well known, it can also lead to gastrointestinal complications and heart disease. The World Health Organization estimates that 2.6 million deaths each year are attributable to alcohol. This accounts for nearly 1 in every 20 deaths worldwide.
While many people recognize the risks of alcohol addiction, they are generally much less aware of the links between alcohol use and cancer risk.
The World Health Organization classifies alcohol as a Group 1 carcinogen. This is the same category given to tobacco and asbestos. In simple terms, these agents are classified as having sufficient evidence that they cause cancer in humans.
In 2025, a U.S. Surgeon General advisory emphasized that alcohol increases the risk of at least seven cancers. It called for updated warning labels. The advisory concluded that alcohol increases an individual’s risk of developing seven types of cancer. These include cancers of the breast, colorectal system, liver, mouth, esophagus, and larynx.
Yet fewer than half of Americans recognize alcohol as a risk factor for cancer. This is particularly true for cancers such as breast cancer, which are not commonly associated with alcohol use in the public mind.
The relationship between alcohol and cancer is nuanced. Throughout the 1990s and early 2000s, observational studies suggested that moderate alcohol consumption might offer cardiovascular benefits. Many people believed that a daily glass of wine was good for the heart.
Over the past decade, however, higher-quality studies have challenged those findings. Researchers suggest that much of the apparent benefit may have reflected differences in the health and lifestyles of moderate drinkers. This was not a protective effect of alcohol itself. Drinkers might have had better diets, more exercise, or higher socioeconomic status. These factors, rather than the alcohol, explained the health outcomes.
According to the Dietary Guidelines for Americans, current evidence increasingly suggests that even low levels of alcohol may increase cancer risk. The guidelines acknowledge that adults should “consume less alcohol for better overall health.”
However, the most recent version of the guidelines for 2025-2030 introduced controversial changes. Updated in January 2025, the new guidelines removed the previous recommendation to limit intake to no more than one drink per day for women and two for men. It also omitted explicit discussion of alcohol’s links to cancer. These changes have drawn criticism from public health experts. They argue that the revised language downplays the growing evidence of alcohol-related harms. It also provides less specific guidance to consumers.
Against this backdrop, Dr. Mehmet Oz, Administrator of the Centers for Medicare & Medicaid Services, characterized alcohol as a “social lubricant” that brings people together. He focused on this positive social aspect rather than emphasizing its well-established health risks.
That may be true physiologically, at least temporarily. But it obscures a critical fact. Relying on alcohol as a social lubricant can lead to chemical and psychological dependency. In my view, statements that focus only on social benefits are shortsighted. They prioritize short-term social effects over more insidious and long-term issues, including addiction.
While many dangerous mind-altering substances are hidden from public perception, alcohol is often placed at the center of it. This trend shows no sign of changing imminently. Furthermore, large companies often profit from ads that appeal to young people.
Looking back at the history of tobacco smoking provides some helpful insights. In 1965, 42.4% of the U.S. population smoked. By 2022, that figure had dropped to 11.6%.
This dramatic decline did not happen because of a single intervention. It occurred through decades of accumulating scientific evidence, public education campaigns, warning labels, restrictions on advertising, smoke-free policies, higher tobacco taxes, and shifts in social norms. Together, these efforts transformed smoking from a widely accepted social behavior into one broadly recognized as a major health risk. Smoking became less socially accepted.
Although alcohol consumption has modestly declined in recent years, it remains deeply embedded in social life in ways cigarette smoking no longer is. People often assume that if a substance is legal, common, and widely socially accepted, it must also be safe. But public health history suggests those assumptions can and should change. We have changed them for tobacco, and the evidence now demands we look critically at alcohol as well.