Moderate drinking definition for men and women: Why it’s different (VIDEO).

Why Do Doctors Tell Women to Drink Less Than Men? 

Why Do Doctors Tell Women to Drink Less Than Men? 

Slate in motion.
Dec. 29 2014 10:30 AM

Two for Him, One for Her

Why do doctors tell women to drink less than men? 

President Obama (C) and First Lady Michelle Obama.
MONEYGALL, IRELAND - MAY 23: U.S. President Barack Obama enjoys a glass of Guinness in his ancestral home of Moneygall alongside First Lady Michelle Obama (L) on May 23, 2011 in Moneygall, Ireland. U.S. President Obama is visiting Ireland for one day at the start of a week long tour of Europe. He will meet with distant relatives in Moneygall and speak at a rally in central Dublin after a concert. (Photo by Irish Government - Pool/Getty Images)

Photo by Irish Government - Pool/Getty Images

New Year’s Eve overindulgence is likely to remind many people this week of the virtues of moderation. In 2012, Brian Palmer and Dallas Jensen explained why many doctors define "moderation" as two drinks a day for men but only one for women. Watch the video below.

Medical guidelines generally suggest that healthy, moderate drinking is one drink a day for women and two for men. Why the disparity? The video above shows this particular recommendation hasn’t always been around—and doctors are still trying to figure out why women tolerate alcohol differently than men.

Correction, Dec. 29, 2014: This video mispronounces cirrhosis as psoriasis. The error remains in the video.

Brian Palmer covers science and medicine for Slate.

Dallas Jensen is a regular video contributor to Slate.