Is kombucha healthy?
As a swap for soda or a cocktail, it’s a decent choice. As a health drink, the evidence isn’t there yet. A 2019 review of 310 articles found only one study that tested kombucha’s effects in people. It’s fermented, so it can carry a little alcohol, and US rules treat it as an alcohol drink if it reaches 0.5% at any point, even after bottling.
Kombucha has the glow of a wellness drink: probiotics, gut health, detox. Most of that comes from lab and animal work and from how good fermented foods sound. The drink itself is fizzy and tart, and as a stand-in for a cocktail it has a lot going for it.
What we’d do
Drink it because you like it, as a replacement for soda or an evening cocktail. Check the label for sugar. If you need zero alcohol, for pregnancy, recovery or a medicine, skip it or choose one that lists its alcohol content.
The pros
- A good swap. Fizzy, tart and grown-up enough to replace a drink at 6pm. Replace your evening drink has more ideas.
The cons
- The benefits are untested in people. In July 2018, two researchers searched PubMed, Scopus and Ovid for human studies of kombucha. Of 310 articles, they found one. They wrote that the health claims from other kinds of research need to be “tested in human clinical trials.”
- It can contain alcohol. Fermentation makes some. The US Alcohol and Tobacco Tax and Trade Bureau says that if kombucha reaches 0.5% or more alcohol at any stage, including after bottling as it keeps fermenting, it’s regulated as an alcohol drink and needs the government warning label. The CDC says there’s no known safe amount in pregnancy.
- Sugar varies. Read the label and compare it with regular cola, which USDA lists at 152 calories for 12 oz.
The best non-alcoholic drinks ranks the rest of the shelf.
4 sources
- Kapp JM, Sumner W, Kombucha: a systematic review of the empirical evidence of human health benefit, Annals of Epidemiology, 2019pubmed.ncbi.nlm.nih.gov
- Alcohol and Tobacco Tax and Trade Bureau, Kombucha, last updated August 13, 2019ttb.gov
- US Department of Agriculture, Nutritive Value of Foods, Home and Garden Bulletin 72, 2002ars.usda.gov
- US Centers for Disease Control and Prevention, About Alcohol Use During Pregnancy, reviewed August 14, 2026cdc.gov
