Proof is a measure of the alcohol content of a beverage. In the U.S., policymakers define proof as twice the percentage of alcohol by volume (ABV). For example, a drink with 40% ABV is 80 proof.

When shopping for spirits, you might see two different values on labels: "ABV," or alcohol by volume, and "proof." That second one isn't always there, as distilleries in the United States aren't ...

Excessive drinking can damage the liver. Yet, unlike obesity or high cholesterol, clinicians only screen for alcohol use by asking their patients how much they drink. Turns out that method is not ...