Is Your Occasional Brew or Glass of Wine Affecting Your Gut?

by | Read time: 4 minutes

You know that drinking too much is bad for your liver, but did you know it’s also bad for your gut? Alcohol’s effect on gut health can disrupt everything from digestion to mood. It might even be one of the reasons why drinking can cause liver damage.

Here’s what alcohol does to your gut—and what you can drink instead to give your body a break.

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How alcohol affects gut health

Overindulging in alcohol can irritate your entire digestive system, starting with inflammation in the stomach known as gastritis. It can also damage the lining of your small intestine and may compromise the enzymes and fluids your body requires for digestion. Together, these effects make it difficult for your body to break down and absorb nutrients from food.

Dysbiosis is another potential problem. Alcohol can kill off both bad and good bacteria throughout the intestinal tract. This throws off your microbial balance and creates conditions where bad bacteria can thrive, leading to problems like small intestine bacterial overgrowth (SIBO).

An unbalanced microbiome increases your risk of leaky gut. Why? Good bacteria produce byproducts that keep your gut lining healthy, but the combination of inflammation and dysbiosis can cause the tight junctions between cells in the gut wall to open up. Microbial toxins and other harmful compounds can slip out through these openings and “leak” into your bloodstream.

One compound—lipopolysaccharide (LPS)—is of particular concern because research shows it may play a role in how alcoholic liver disease (ALD) develops. When LPS escapes the gut, it goes to the liver for detoxification. Once there, it sets off a pro-inflammatory cascade, which can lead to damage and cirrhosis over time.

People with ALD often have altered microbiomes with lower numbers of SCFA-producing bacteria and higher levels of bacteria that produce inflammatory compounds. These compounds may promote additional inflammation in the liver or trigger systemic inflammation that can affect mood and immune function.

Can quitting alcohol help your gut?

The good news is, going without alcohol for a period of a few weeks to a few months can promote healing and start to reset your gut. It takes about three weeks for gut damage to resolve; the microbiome needs a little longer to balance itself out. The more you tend to drink, the longer the process will take.

During this time, you can support healing by consuming high-fiber foods like fruits, vegetables, whole grains and beans. These foods contain natural prebiotics and probiotics that feed beneficial gut bacteria, which helps resolve dysbiosis and heal leaky gut. Taking prebiotic and probiotic supplements has also been shown to improve liver function in heavy drinkers, but researchers have yet to determine which supplements are best for recovery.

Getting your gut back on track can also improve immune function. As your gut heals, you’re better able to secrete immunoglobulin A (IgA), antimicrobial peptides and other compounds that act as a barrier between the gut and the bloodstream.  IgA in particular can prevent microbial toxins like LPS from escaping the gut and causing inflammation throughout the body.

There is a caution in all of this: You can’t go back to frequent drinking if you want your gut to stay healthy and balanced.  Abstinence appears to promote microbial recovery, but resuming overindulgent drinking habits can restart the pro-inflammatory cycle and cause more damage. Even occasional heavy drinking is associated with negative changes in the gut, so it’s best to avoid alcohol entirely if you’re unable to moderate your intake.

Gut-friendly alternatives to alcohol

Fortunately, you have a lot of options if you want to give your gut a break from alcohol without missing the experience of your favorite drinks. Try some of these innovative and delicious alternatives with zero alcohol content:

  • Sparkling teas and waters brewed with hops from brands like Hoplark, HOP WTR and H2OPS
  • Fruit and herb cocktails with adaptogens from Curious Elixirs
  • Sparkling beverages with prebiotics and probiotics from Wildwonder and OLIPOP
  • Sparkling adaptogenic teas and waters from Recess
  • Alcohol-free spirits from Seedlip

Other options like kombucha, water kefir and non-alcoholic beer and wine have very small amounts of alcohol that shouldn’t disrupt your microbiome. In fact, drinking non-alcoholic beer may have a positive impact on gut bacteria diversity, although these effects need to be confirmed with further study.

This is just a small sample of the low- and no-alcohol options on the market. Non-alcoholic beverage sales grew 33% from later 2020 to late 2021, driven largely by millennials and Gen Z. These generations are focusing on improving their wellbeing, which includes drinking less (or not drinking at all).

Whether you join their quest for a few weeks in Dry January or decide to abstain entirely, you’ll be doing your gut (and the rest of your body) a big favor.

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Theresa Sam Houghton

As Chief Nerd at The Modern Health Nerd, Theresa “Sam” Houghton is using smart strategies and great content to help health-focused CPG brands build meaningful relationships with their customers.

Sam is a graduate of both the Bauman College Nutrition Consultant program and the T. Colin Campbell Center for Nutrition Studies Plant-Based Nutrition Certificate program and uses this expertise to bring a unique perspective to content marketing.

Her writing appears regularly on NutritionStudies.org and has been featured on Green Queen Media. She has been a guest on WMAC’s Food Friday, the Just Ask David podcast, Pandemic Punditry, the Vegan Stories Podcast and Let’s Eat with Mark Samuel. When she’s not writing or cooking, Sam likes to read and study the Bible, cook tasty plant-based food, hang out at farmers markets and knit crazy socks.