In January, just before the end of his four-year tenure, Surgeon General Vivek Murthy, issued an urgent advisory to the American public: Alcohol consumption significantly increases the risk of developing at least seven types of cancer — colorectal, breast, esophageal, liver, mouth, throat, and larynx.
Nearly 100,000 Americans are diagnosed with alcohol-related cancers annually; 20,000 die. Just one daily drink raises the risk of breast cancer in women by 10%; men and women who consume two drinks daily double their oral cancer risk.
Multiple well-documented studies have proven that the more you drink, the more likely you are to develop cancer, prompting the World Health Organization to warn that no level of alcohol consumption is safe.
Alcohol has been a known carcinogen for 40 years; its consumption is the third-leading cause of preventable cancer in the United States, after tobacco and obesity. But most Americans remain unaware of this cancer link, and blame genetics, pesticides, asbestos, or stress as chief causal factors.
A Gallup poll of 1,002 Americans, published on Wednesday, Aug. 13, found that 54% of respondents reported drinking alcohol. The more definitive National Alcohol Survey, with 9,668 participants, found in 2020 that 72% consumed between one and seven drinks a week.
Alcohol triggers malignancies by metabolizing into acetaldehyde, which causes DNA mutations and precancerous inflammation of the body’s organs (primarily the liver and gut). It disrupts hormonal function and raises estrogen levels (thereby increasing rates of breast malignancies). Because alcohol is a solvent, it enhances the absorption of other carcinogens, such as the hydrocarbons in tobacco smoke and nitrates in smoked meats.
The “Dietary Guidelines for America,” developed and updated by the departments of Agriculture and Health and Human Services, advises those who choose to drink to do so in moderation — defined as no more than two drinks daily for men or one drink for women. (One drink is 12 ounces of beer, five ounces of wine, or 1.5 ounces of liquor.) This recommendation hasn’t changed since 1990.
But the Surgeon General’s health warning label on alcoholic beverages, last updated in 1988, does not mention the increased cancer risk. It reads: “According to the Surgeon General, women should not drink alcoholic beverages during pregnancy because of the risk of birth defects. Consumption of alcoholic beverages impairs your ability to drive a car or operate machinery, and may cause health problems.”
South Korea — the first of only two countries to amend its warning labels — in 2015 added: “Excessive consumption of alcohol may cause liver cirrhosis or liver cancer.” Ireland’s revised label (effective May 2026) reads, “There is a direct link between alcohol and fatal cancers.”
The January advisory urges updating existing alcoholic beverage labels to include a warning about the cancer risk, but notes that “the power to change the label statement lies with Congress.” The Surgeon General’s recommendations also include reassessing the limits for alcohol consumption, and working to educate the American public about the alcohol-cancer link.
Dr. Mary Jenkins, a contributor to the Herald and member of its board of directors, retired after nearly 40 years as a family practice physician in New York state.