What, exactly, is moderate drinking?

Washington Post | Research on alcohol is in a pickle.

There’s no question that pounding one drink after the next is bad for your health.

Things get murkier when it comes to “moderate” drinking. What does that mean? What’s the limit? Can a health-conscious person serenely order a second round?

The alcohol industry has long embraced the notion that alcohol in moderation not only won’t harm you but is actually good for you.

The hypothesis gained traction in the early 1990s when “60 Minutes” reported on what is called the French Paradox.

The French have low rates of heart disease despite all the butter, cream, foie gras, etc. in the Gallic diet. Some researchers suggested that compounds in red wine, also favored by the French, explain the paradox.

Many studies have shown that people who drink any kind of alcohol in moderation — wine, beer, spirits — have lower rates of heart disease than people who abstain or who drink heavily. But the evidence is stubbornly ambiguous.

As reported in the Lancet earlier this year, a survey of the health of nearly 600,000 drinkers in 19 countries found that very moderate drinking — about one drink a day — lowers the rate of certain kinds of heart attacks but raises the risk of other cardiovascular problems.

There’s no net benefit in life expectancy, the study found.

Alcohol research is notoriously bedeviled by what are called “confounding effects.” The most obvious is that the non-drinking population includes people who can’t drink because of health problems.

Meanwhile, healthy people feel free to drink. This can create a misleading impression of cause and effect.

“People who drink moderately are healthier than people who don’t drink. But that doesn’t mean the drinking caused them to be healthier,” says University of Minnesota social epidemiologist Toben Nelson.

Read the full story at Washington Post. 

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