Gut & Microbiome
kombucha prevents liver injury
In plain terms: Is kombucha good for your liver?
Part of: • kombucha
Animal studies only — and it cuts both ways. Kombucha protected rats' livers, but in humans there are multiple case reports of kombucha-associated liver injury. The animal benefit hasn't been shown in people, and the human safety reports point the other way.
📅 Last reviewed: 2026-07-15 ⓘ
Evidence ladder
How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."
Top evidence so far: Animal studies (Animal)
How the studies fall
What the evidence shows
Animal-only — and paradoxical. Kombucha showed hepatoprotective effects in rats and against oxidative damage in liver cells, yet in humans the opposite has been reported: multiple case reports of kombucha-associated liver injury. Animal protection has not translated to a proven human benefit and sits awkwardly beside the safety signal.
The evidence (11)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Wang Y, Ji B, Wu W, Wang R, Yang Z, Zhang D, Tian W 2014 · J Sci Food Agric | animal | mixed | low | Rats: kombucha hepatoprotective, active agents identified (animal only). |
| Pauline T, Dipti P, Anju B, Kavimani S, Sharma SK, Kain AK, Sarada SK, Sairam M, Ilavazhagan G, Devendra K, Selvamurthy W 2001 · Biomed Environ Sci | animal | mixed | low | Rats: kombucha showed anti-stress and hepatoprotective activity across doses. |
| Lee C, Kim J, Wang S, Sung S, Kim N, Lee HH, Seo YS, Jung Y 2019 · Int J Mol Sci | animal | supports | low | NAFLD rodent model: kombucha hepatoprotective (animal; contrasts with human hepatotoxicity reports). |
| Murugesan GS, Sathishkumar M, Jayabalan R, Binupriya AR, Swaminathan K, Yun SE 2009 · J Microbiol Biotechnol | animal | mixed | low | Rats: kombucha hepatoprotective/curative against induced liver toxicity (animal only). |
| Bellassoued K, Ghrab F, Makni-Ayadi F, Van Pelt J, Elfeki A, Ammar E 2015 · Pharm Biol | animal | supports | low | Rats: kombucha improved liver-function markers in a hypercholesterolemic model. |
| Ernst E 2003 · Forsch Komplementarmed | observational | contradicts | low | Systematic review: in humans, kombucha is linked to hepatotoxicity case reports — animal hepatoprotection has not translated to a safe human benefit. |
| Gashti RZ, Karami M, Habibi E, Abbasi A, Parsay S, Modanloo M, Khalili HA, Shokrzadeh M 2026 · Research in pharmaceutical sciences | animal | supports | moderate | Medusomyces gisevii (kombucha SCOBY) extract in HFD mice: lowered ALT/AST/ALP, reduced oxidative stress, alleviated hepatic steatosis/damage |
| Bhattacharya S, Gachhui R, Sil PC 2011 · Pathophysiology | in-vitro | mixed | low | Liver-cell model: kombucha protected against tert-butyl-hydroperoxide-induced hepatocyte oxidative damage. |
| Jung Y, Kim I, Mannaa M, Kim J, Wang S, Park I, Kim J, Seo YS 2019 · Food Sci Biotechnol | animal | mixed | low | NAFLD mice: kombucha improved liver markers via gut microbiota (animal only). |
| Urrutia MAD, Ramos AG, Menegusso RB, Lenz RD, Ramos MG, Tarone AG, Cazarin CBB, Cottica SM, da Silva SAV, Bernardi DM 2021 · Heliyon | animal | contradicts | low | Cafeteria-diet rats: kombucha did not prevent diet-induced liver changes (null). |
| de Almeida JS et al 2025 · bioRxiv | animal | mixed | moderate | HFD MASLD mice: kombucha reduced liver steatosis, hepatic TG, and fibrosis, improved glucose tolerance; no synergy w/ liraglutide |
Disagree, or know a study we missed?
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Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.