7 Evidence-Based Health Benefits of Kombucha Tea (2024)

Kombucha may provide similar benefits to green tea and protect against conditions like diabetes and cancer. It also contains probiotics, which can benefit your gut microbiome.

People have consumed kombucha, a type of fermented tea, for thousands of years. Not only does it have the same health benefits as tea — it’s also rich in beneficial probiotics.

Kombucha also contains antioxidants, can kill harmful bacteria, and may help fight several diseases.

Here are the top 7 health benefits of kombucha, based on scientific evidence.

Kombucha is thought to originate in China or Japan.

It’s made by adding specific strains of bacteria, yeast, and sugar to black or green tea and then allowing it to ferment for a week or more.

During this process, bacteria and yeast form a mushroom-like film on the surface of the liquid. This is why kombucha is also known as “mushroom tea.”

This blob is a living symbiotic colony of bacteria and yeast, or a SCOBY, and can be used to ferment new kombucha.

The fermentation process produces acetic acid (also found in vinegar) and several other acidic compounds, trace levels of alcohol, and gases that make it carbonated.

A large number of bacteria also grow in the mixture. Kombucha contains several species of lactic acid bacteria that may have a probiotic function.

Probiotics provide your gut with healthy bacteria. These bacteria may improve many aspects of health, including digestion, inflammation, and even weight loss.

Green tea contains many bioactive compounds, such as polyphenols, which are powerful antioxidants in the body.

Kombucha made from green tea contains many of the same plant compounds and presumably boasts some of the same benefits.

Studies show that drinking green tea regularly or taking supplements containing green tea extract can increase the number of calories you burn, reduce belly fat, improve cholesterol levels, help with blood sugar control, and more.

Studies also show that green tea drinkers have a reduced risk of prostate, breast, and colon cancers.

Antioxidants are substances that fight free radicals, reactive molecules that can damage your cells. Kombucha, especially when made with green tea, appears to have antioxidant effects on your liver.

Rat studies have found that drinking kombucha regularly reduces liver toxicity caused by toxic chemicals. While no human studies exist on this topic, it seems like a promising research area for people with liver disease.

One of the main substances produced during the fermentation of kombucha is acetic acid, which is also abundant in vinegar.

Like the polyphenols in tea, acetic acid can kill many potentially harmful microorganisms.

Kombucha made from black or green tea has strong antibacterial properties, particularly against infection-causing bacteria like E. coli and Salmonella typhi.

These antimicrobial effects suppress the growth of undesirable bacteria and yeasts in test tube studies, but they do not affect the beneficial, probiotic bacteria and yeasts involved in kombucha fermentation.

Heart disease is the world’s leading cause of death.

Rat studies show that kombucha can greatly improve two markers of heart disease, “bad” LDL and “good” HDL cholesterol, in as few as 30 days.

Even more importantly, tea (especially green tea) protects LDL cholesterol particles from oxidation, which is thought to contribute to heart disease.

In fact, green tea drinkers have a lowerrisk of developing heart disease, a benefit that may also apply to kombucha.

Type 2 diabetes affects over 462 million people worldwide. 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.

In a 2023 pilot study, participants who consumed kombucha (240 mL/day for 4 weeks) had lower fasting blood sugar levels than baseline, while the placebo group did not.

A 2023 randomized controlled trial found that kombucha lowered the blood sugar response to high glycemic index meals in healthy adults.

Further human studies are needed to investigate the benefits of kombucha for blood sugar management.

Cancer is one of the world’s leading causes of death. It’s characterized by cell mutation and uncontrolled cell growth.

In test-tube studies, kombucha helped prevent the growth and spread of cancerous cells, possibly due to its high concentration of tea polyphenols and antioxidants.

How the anticancer properties of tea polyphenols work isn’t well understood. It’s thought that the polyphenols block gene mutation and the growth of cancer cells while also promoting cancer cell death.

For this reason, it isn’t surprising that tea drinkers are less likely to develop various types of cancer.

However, whether kombucha has anticancer effects on people hasn’t been confirmed. Further studies are needed.

What does kombucha do for the body?

Kombucha made from green tea may offer many of the same health benefits as green tea itself, such as weight loss and blood sugar management.

Studies have shown that antioxidant-rich kombucha protects rats’ liver from toxicity.

Kombucha is also rich in tea polyphenols and acetic acid, which have both been shown to suppress the growth of undesirable bacteria and yeasts.

It has been shown to improve LDL and HDL cholesterol levels in rats and protect against heart disease. Kombucha also improved several markers of diabetes in rats, including blood sugar levels.

Test tube studies show that kombucha may suppress the growth of cancer cells. It’s unknown whether drinking kombucha has any effects on cancer risk in people.

Is it good to drink kombucha every day?

Kombucha is safe for most people to drink in moderation. Your kombucha of choice — whether store-bought or homemade — ultimately determines how much you can drink without experiencing unwanted side effects.

Kombucha is carbonated, which can lead to bloating when consumed in excess. Some kombucha products are high in sugar, which can also contribute to digestive upset.

Who should not drink kombucha?

Consult with a healthcare professional before drinking kombucha if you have irritable bowel syndrome, a compromised immune system, are pregnant, or are nursing.

Kombucha is a type of tea that has been fermented. This makes it a good source of probiotics, which have many health benefits.

Improperly prepared kombucha may have adverse health effects. A safer option is to buy bottled kombucha at the store.

7 Evidence-Based Health Benefits of Kombucha Tea (2024)

FAQs

7 Evidence-Based Health Benefits of Kombucha Tea? ›

Takeaways. 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.

What are the scientifically proven benefits of kombucha? ›

Takeaways. 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 there any medical evidence for kombucha? ›

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.

What diseases does kombucha fight? ›

Limiting inflammation

Kombucha is loaded with antioxidants and polyphenols that work overtime to protect your body from damage. This can help limit chronic inflammation that can lead to health issues such as heart disease, cancer and arthritis.

Who should not drink kombucha? ›

Pregnant and breastfeeding women, children, and individuals with liver or kidney disease, HIV, impaired immune systems, and alcohol dependency should avoid kombucha. For others, kombucha is a wonderfully refreshing beverage that has many benefits, when made safely and consumed moderately.

Can kombucha heal your gut? ›

Kombucha and other fermented foods are full of antioxidants and probiotics, or live bacteria, that boost the health of intestinal cells, improve immune function and aid in food digestion. “They make the body more efficient,” said Braxton.

Does kombucha reduce inflammation? ›

Kombucha contains antioxidants

Antioxidants are compounds found in food that help protect your body. They can help reduce inflammation, support your immune systems and reduce DNA damage. They also may help reduce your risk for diseases like cancer.

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).

What is the best way to drink kombucha for good results? ›

Take it on an empty stomach . That's when you'll take full advantage of its probiotic and detoxifying properties. Recover with a glass of kombucha after training. You will provide minerals, vitamins and enzymes, as well as organic acids that will go a long way to rehydrate and remineralize you.

What is the science behind kombucha? ›

During Kombucha fermentation, sucrose is hydrolysed by yeast cells into fructose and glucose, which are then metabolised to ethanol. The ethanol is then oxidised by acetic acid bacteria (AAB) to produce acetic acid which is responsible for the reduction of the pH and also contributes to the sour taste of Kombucha.

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.

Can kombucha cause Candida overgrowth? ›

In fact, kombucha may actively inhibit the growth of Candida: A report in the Journal of Food Biochemistry found that when kombucha is made from green or black tea, kombucha has antifungal and antibacterial properties.

How does kombucha Alkalize your body? ›

Kombucha is acidic (with a pH of 3.0 – 3.5) but the live-cultured ferment is considered to have an alkalizing effect on us. The chemistry process in which minerals are made more bioavailable to us is alkaline forming and has an effect similar to lemon juice and apple cider vinegar.

Why do I feel weird after drinking kombucha? ›

Most kombucha side effects happen for one of two reasons: The amount of beverage consumed. Because this is a probiotic drink, drinking too much might lead to an upset digestive system. And because sugar is involved, overconsumption can also lead to too much sugar intake.

Is it OK to have kombucha everyday? ›

It can be high in calories and sugar, so overindulging isn't the best choice for your health. To reap the benefits of kombucha without consuming too many calories, limit your intake to one to two 8-ounce (240-ml) servings per day.

What not to eat with kombucha? ›

One tip to keep in mind is that many people find that kombucha does not pair well with foods that are already higher in acidity because the flavor can become lost or overpowered.

Is drinking kombucha every day good for you? ›

While a glass of kombucha is A-OK, drinking multiple servings every single day may not be the best choice," Manaker says, noting that it might invade the space of good ol' H2O, can contain some caffeine from the tea, and could do a number on your teeth due to its acidity.

What does kombucha do to the brain? ›

Catechins found in kombucha made with green tea are also great for boosting memory. These along with the anti-inflammatory polyphenol compounds in kombucha will keep your brain health in tip-top shape.

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