We're not quite sure why, except to say that animal studies of ethanol show there's not a lot of evidence that ethanol alone can cause scientific cancers. What You Can Do Currently the Code of Federal Regulations does not require alcoholic-beverage manufacturers to place warnings about an increased risk of cancer on their products' labels. Moderate your alcohol intake. Learn as much as possible about the fermenting or distilling process behind the product. For instance, certain flavor compounds and synthetic substances used in the process might contain carcinogens.
Wooden casks used for maturation in wine can also be suspect.
U.S. National Institute for Environmental Health Sciences. You should not use this information to diagnose or treat a health problem or disease without consulting with a qualified healthcare provider. Please consult your healthcare provider with any questions or concerns you may have regarding your condition.