At first glance, “warmed beer to fight a cold” looks like something a brewery might have cooked up in order to turn a profit during cold & flu season. It certainly wouldn’t be the first time a brewery has made a positive health claim about its beer to increase sales.

Take for example Guinness’ advertising slogan from the 1920s “Guinness is Good for You,” which later had to be changed to comply with Irish advertising regulations that prevent adverts from suggesting that alcohol has therapeutic qualities. (Irish advertising authorities also thought it necessary to issue regulation preventing advertisers from suggesting that “the presence or consumption of alcohol can contribute towards sexual success or make the drinker more attractive.”)

A similar legal reaction unfolded in the U.S. after Schlitz began fortifying its beer with vitamin D in 1936, touting that consumption of the beer would lead to “year round vigorous health.” Schlitz was quickly imitated by Auto City Brewing Co. when it started adding vitamins B and G (riboflavin) to its Altweiser Beer in 1937 along with the advertisement that Altweiser “is more refreshing because of the vitamins B and G which it contains… vitamins which are absolutely essential to proper digestion.”¹ In response, the Federal Alcohol Administration (FAA) ruled in 1940 that beer labeling could not make mention of vitamins.

And no, it wasn’t just breweries that tried to add to their bottom lines by extolling the alleged healing powers of hooch. Indeed, doctors commonly used to write prescriptions for “medicinal alcohol” to treat a number of aliments during U.S. Prohibition. Perhaps the most famous instance of all involved Sir Winston Churchill who was given an unlimited prescription for booze in 1931 for “post accident convalescence” after Churchill was struck by a car after exiting a cab in New York City.

Financial motives aside, the question remains: is there any truth to the old German folk remedy that claims a warmed beer can aid against the common cold? As it turns out, the answer appears to be yes, at least according to some modern-day science.

Of course beer is not going to cure a cold (there is no current cure), but it appears beer may help with cold prevention and assist in recovery.

The following are a few possible ways in which science has suggested that beer, warmed or otherwise, might aid against a cold:

1. Alcohol as a Pain Reliever, Pleasure Producer and Sleep Aid

Proper beer contains alcohol, and alcohol has been scientifically shown to increase tolerance to pain, release endorphins which promote feelings of well-being, and decrease the amount of time it takes to fall asleep, although it can reduce the quality of sleep. Nevertheless, sleep helps both to prevent a cold and aid in recovery.

So is this why NyQuil contains 10% alcohol-by-volume? Maybe, but the official corporate line according to Procter & Gamble is that alcohol is used only as a solvent to keep the active ingredients in NyQuil in solution.

2. Hot Beverages Provide Relieve from Cold and Flu Symptoms

According to a 2008 study done by the Common Cold Centre at Cardiff University, scientists found that a “hot drink provided immediate and sustained relief from symptoms of runny nose, cough, sneezing, sore throat, chilliness and tiredness, whereas the same drink at room temperature only provided relief from symptoms of runny nose, cough and sneezing.”

While this study was conducted using a hot fruit drink (not beer), it nevertheless lends strong support to the idea that a warm beverage, beer or otherwise, would confer the same kind of cold symptom relieving effects.

3. Hops as a Sleep Aid

A Spanish study from 2012 confirmed the sedative properties of hops, while a subsequent study showed that women who drank one bottle (330 ml/11.16 oz) of non-alcoholic beer that contained hops per night had improved sleep quality and reduced levels of anxiety.

And according to a 2015 U.S. study, sleep turned out to be the single most important factor in preventing colds, more so than age, stress levels, race, education or income. People who sleep six hours a night or less are four times more likely to catch a cold when exposed to the virus, compared to those who sleep more than seven hours a night.

Short story shorter: hops improve sleep, and sleep helps prevent colds.

4. Beer Often Contains Helpful Vitamins

Yes, the chemical compound “humulone” found in hops has virus-fighting properties according to a 2012 Japanese study, but you’d need to down about 30 twelve-ounce beers to get the associated antivirus benefits. Don’t do that. (Of course that’s still better than the roughly 80 glasses of red wine needed to get the recommend daily 40 mg of resveratrol.)

That said, just one beer may provide up to 12.5% of the recommended daily dose of B6. Vitamin B6 is a metabolism enhancer that helps to unlock and better utilize the energy and nutrients in food. That’s an extra energy and nutrient boost that can be used in the battle of You-vs-Cold. B6 in beer is derived from the yeast used to make the beer, which means unfiltered beers or bottle-conditioned beers will have the highest amount of vitamin B6, whereas filtered beers will have the lowest amount if any.

5. Beer and Alcohol as Immune System Boosters

A German study involving athletes showed that the risk of catching a cold was reduced by 33% after drinking alcohol-free wheat beer. Meanwhile, two other studies found that moderate alcohol consumption boosts the immune system.

As it turns out, science has shown that moderate consumption of alcohol is effective in preventing the common cold, but in the interest of fair reporting, there are a couple potential draw-backs of alcohol to keep in mind.

A) If taking any medication that recommends against the use of alcohol, it’s reasonable to follow that advice.

B) Alcohol is a diuretic which means it has a dehydrating effect by way of increasing the amount of urine produced in the body by about 160% in the case of beer. Translation: for every 12 ounces of beer you drink at 5% ABV, you expel about 19 ounces of water for a net loss of 7 ounces of water.

Staying hydrated is important particularly when fighting a cold because water helps to transport cold-fighting nutrients throughout the body, although watch how much water you consume as science seems to suggest that drinking excess water won’t help beat a cold.

So why not just drink an additional 7 ounces of water per beer to make up for the loss?

Clever idea. There’s just one catch: the body only hangs on to about 33-50% of the extra water you drink. If you’re thinking just drink a little more water, we really like the way you think, you problem-solver, you. Something like 14-21 ounces of water per beer sound about right?

Will “Warmed Beer to Fight a Cold” Become a Thing Again?

Only time will tell. Meanwhile, it turns out there might have just been something to that old German home remedy of warmed beer to ward off a cold after all.

Auf dein Wohl! (To your well-being!)

Related Article: Warmed Beer for Health— Not Just a German Thing

[Disclaimer: Nothing contained in this article is to be considered medical advice. In fact, we’re a little weary of medical-related stuff in general, seeing as how medical errors are now the third leading cause of death at least in the U.S. In other words, good luck!]

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Hi, I’m Dan: Beer Editor for BeerSyndicate.com, Beer and Drinking Writer, Award-Winning Brewer, BJCP Beer Judge, Beer Reviewer, American Homebrewers Association Member, Shameless Beer Promoter, and Beer Traveler.