A mug of kombucha tea for your health? (2024)

What is kombucha tea? Does it have any health benefits?

Answer From Katherine Zeratsky, R.D., L.D.

Kombucha tea is a fermented drink made with tea, sugar, bacteria and yeast. To make the drink, bacteria and yeast must first grow together to form a culture. The culture is added to the sugar and tea. Then the mix is allowed to ferment. The end result is a liquid that has vinegar, B vitamins and many other types of acids, including amino acids.

Supporters claim that kombucha tea helps prevent and treat health conditions, from blood pressure to cancer. There is limited data on kombucha tea. A small amount of research suggests that kombucha tea may give benefits similar to probiotic supplements. For example, some research suggests kombucha tea may support a healthy immune system and prevent constipation.

But there are few valid medical studies of kombucha tea's role in human health. And there are risks to think about.

Kombucha tea has caused stomach upset, infections and allergic reactions in some people. Kombucha tea is often made (brewed) in homes under unclean conditions. This makes it likely that bad bacteria can grow.

Also, when the tea is made with ceramic pots that have lead in them, lead poisoning happens. The acids in the tea cause lead to leak from the ceramic glaze.

In short, there isn't enough proof that kombucha tea has the health benefits that some claim. At the same time, cases of harm have been reported. People who are pregnant or breastfeeding or who have weakened immune systems should avoid kombucha tea. Others may drink the tea if they like the taste, but only if it comes from a trusted source.

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Aug. 24, 2022

  1. Kombucha. Natural Medicines. https://naturalmedicines.therapeuticresearch.com/databases/food,-herbs-supplements/professional.aspx?productid=538. Accessed July 18, 2022.
  2. Duyff RL. Academy of Nutrition and Dietetics Complete Food and Nutrition Guide. 5th ed. Houghton Mifflin Harcourt; 2017.
  3. Villarreal-Soto SA, et al. Understanding kombucha tea fermentation: A review. Journal of Food and Science. 2018; doi:10.1111/1750-3841.14068.
  4. Kapp JM, et al. Kombucha: A systematic review of the empirical evidence of human health benefit. Annals of Epidemiology. 2019; doi:10.1016/j.annepidem.2018.11.001.
  5. Probiotics: What you need to know. National Center for Complementary and Integrative Health. https://www.nccih.nih.gov/health/probiotics-what-you-need-to-know. Accessed July 18, 2022.
  6. Zeratsky KM, et al. Mayo Clinic (expert opinion). July 20, 2022.

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A mug of kombucha tea for your health? (2024)

FAQs

What does kombucha do to your body? ›

Kombucha is an ancient fermented tea that may have many health benefits, such as improving digestion, boosting the immune system, lowering cholesterol levels, and supporting cardiovascular health.

Is it okay to drink kombucha every day? ›

The Centers for Disease Control recommends that four ounces of kombucha can be safely consumed one to three times a day. Overconsumption can lead to headache, nausea, gastrointestinal distress, or ketoacidosis.

Who should not drink kombucha? ›

People who are pregnant or breastfeeding or who have weakened immune systems should avoid kombucha tea. Others may drink the tea if they like the taste, but only if it comes from a trusted source. Katherine Zeratsky, R.D., L.D.

What does kombucha do for weight loss? ›

Improves your intestinal flora and facilitates weight loss by keeping your digestive system in shape, improving digestion and regulating trips to the bathroom. Kombucha, rich in natural probiotics, balances the bacteria in your intestines, better processing nutrients and filtering waste efficiently.

Does kombucha clean your gut? ›

Boosting your gut health

“Good” bacteria are essential for your gut microbiome to thrive — and fermented foods such as kombucha contain probiotics to help keep those levels high. “Kombucha can really help feed and increase that good, healthy gut bacteria, which can help decrease any bad bacteria,” says Zumpano.

Is kombucha good for kidneys? ›

Kombucha may help manage type 2 diabetes

It's characterized by high blood sugar levels and insulin resistance. A 2012 study in diabetic rats found that kombucha slowed down the digestion of carbs, which reduced blood sugar levels. It also improved liver and kidney function.

What is the best time to drink kombucha? ›

To give your digestive system a kickstart, some health professionals advise drinking kombucha on an empty stomach, first thing in the morning. Consuming on an empty stomach means that the living cultures can reach the large intestine more efficiently and better aid with digestion throughout the day.

Does kombucha flatten your stomach? ›

Does kombucha help you lose belly fat? While kombucha can be a part of a healthy weight-loss journey, there's no magic solution for losing belly fat. Kombucha may support overall weight management by supporting digestion and gut health, but it's not a stand-alone solution for targeting belly fat.

Does kombucha clean your liver? ›

Liver Health

While liver detoxification effects have not been proven regarding kombucha, it may offer some form of protection for the liver (hepatoprotection).

Is store-bought kombucha good for you? ›

While kombucha is safe for most people, it can cause severe side effects in some. Because kombucha is unpasteurized and contains a mix of different types of bacteria and yeasts, it can promote the growth of opportunistic bacteria that can lead to infections in certain people.

Is kombucha bad for blood pressure? ›

Drinking kombucha can, in many cases, help ward off high blood pressure and maintain cardiovascular health. In fact, studies suggest that kombucha may decrease bad cholesterol and improve good cholesterol, perhaps due to the high probiotic content of the popular beverage.

What happens to your body when you start drinking kombucha? ›

Research posted to the Journal of Chemistry notes that the probiotics and antioxidants in kombucha may have a number of therapeutic benefits, such as helping support a healthy gut microbiome, as well as supporting other organs and body systems such as the liver, heart, and nervous system.

Is kombucha a laxative? ›

Kombucha is a fermented, fizzy, slightly sweet form of black tea. Some praise the drink for having several possible health benefits, such as constipation relief and prevention. While it is unlikely to substitute medical laxatives, kombucha may help the frequency and consistency of stools.

How does kombucha rid your body of toxins? ›

It detoxifies the digestive system while simultaneously cleansing the liver. The cultured kombucha contains glucuronic acid, an organic acid that binds with toxins in the body and safely eliminates them.

What does kombucha do for your skin? ›

In addition to its antioxidant and probiotic properties, kombucha also has anti-inflammatory properties, which can help to calm and soothe irritated skin. Its high levels of organic acids also make it an effective natural exfoliant, helping to slough away dead skin cells and reveal a brighter, more even complexion.

How much alcohol is in kombucha? ›

Most commercially available kombucha products contain less than 0.5% alcohol by volume.

Why does kombucha make you happy? ›

Kombucha contains vitamins B1 (thiamine), B6, and B12, all of which are known to help the body fight depression, stabilize mood, and improve concentration. It also contains vitamin C, which suppresses the release of cortisol (one of the stress hormones).

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