Is red wine safer than spirits for cancer risk?

This page looks at whether red wine carries less cancer risk than beer or liquor. It draws on the National Cancer Institute's (NCI's) fact sheet on alcohol and cancer.

A glass of red with dinner feels different from a tumbler of bourbon. One comes with a Mediterranean image attached, the other does not.

The trouble is that the body does not read labels. What it processes is ethanol, and NCI's fact sheet is built around that fact.

NCI defines a standard drink as containing 14.0 grams of pure alcohol. That amount appears in:

• 12 ounces of beer
• 8 to 10 ounces of malt liquor
• 5 ounces of wine
• 1.5 ounces of distilled spirits

Those four servings are the same drink, chemically speaking. A shot of vodka and a glass of wine deliver the same ethanol load to your liver. The container is different, the contents are equivalent.

The question of whether wine gets special treatment has been studied, and NCI reports the result. A recent meta-analysis (a study that pools the results of many studies) found no difference between red or white wine consumption and overall cancer risk.

It also notes that researchers have found no association between moderate consumption of red wine and the risk of developing prostate cancer or colorectal cancer. That is a statement about the absence of a link with those two cancers — not a finding that red wine protects against cancer generally.

On the evidence NCI presents, the wine-is-different theory does not survive contact with the data.

NCI lists established links between alcohol and cancers of the oral cavity and throat, the larynx or voice box, the esophagus in the form of squamous cell carcinoma, the liver, the breast, and the colon and rectum.

Possible associations exist for melanoma and cancers of the pancreas, prostate and stomach. These are weaker links than the established ones above.

NCI describes several routes, including these, and none of them care about the type of drink:

1. The body converts ethanol into acetaldehyde, a substance that can cause cancer.
2. Alcohol creates reactive oxygen species, unstable molecules that damage DNA.
3. It impairs the absorption of nutrients.
4. It raises estrogen levels, relevant to breast cancer.

NCI states that the more someone drinks, the higher the risk of these cancers, and that even light drinkers can be at increased risk of some cancers.

The scale of the effect varies enormously by cancer type and by amount. NCI notes that even light drinkers have a higher breast cancer risk. It also reports that heavy drinkers are about 5 times as likely to develop some cancers of the mouth and throat.

So the useful question is not which bottle. It is how many standard drinks in a typical week.

Cutting back works. NCI reports that stopping alcohol is associated with lower risks of oral cavity and esophageal cancers. It adds that it is never too late to stop drinking.

If you are in treatment, ask your care team about alcohol and your medicines. This page does not cover that.

And if reading this brought a knot to your stomach because you know your drinking has crept up, that reaction is information worth taking seriously. Support exists, it works, and asking for it is not a confession.