Gut & Microbiome
kombucha decreases inflammation
In plain terms: Does kombucha reduce inflammation?
Part of: • kombucha
Weak but not nothing. One small human trial found green-tea kombucha improved inflammatory markers, backed by animal and test-tube data. Too thin to call — one small study on top of lab work.
📅 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: Human trials (RCT / n-of-1)
How the studies fall
What the evidence shows
Weak but not nothing: one human RCT in people with excess weight found green-tea kombucha improved the inflammatory profile, supported by animal and in-vitro antioxidant/anti-inflammatory data. Thin — one small human signal on top of lab studies.
The evidence (11)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Ecklu-Mensah G et al 2024 · medRxiv | RCT | contradicts | low | 8-week RCT in healthy humans (kombucha n=16 vs control n=8): biochemical/inflammation markers not different between groups at end of intervention; fasting insulin/HOMA-IR rose in kombucha arm. |
| Cheepchirasuk N, Kaewkod T, Suriyaprom S, Intachaisri V, Ngamsaard P, Tragoolpua Y 2025 · Scientific reports | in-vitro | supports | low | Green tea kombucha significantly inhibited nitric oxide production in LPS-stimulated RAW264.7 macrophage cells (cell-based anti-inflammatory assay). |
| Fraiz GM, Bonifácio DB, Lacerda UV, Cardoso RR, Corich V, Giacomini A, Martino HSD, Echeverría SE, Barros FAR, Milagro FI, Bressan J 2024 · Nutrients | RCT | mixed | low | RCT in adults with excess weight: green-tea kombucha improved the inflammatory profile over 10 weeks. |
| Wang P, Feng Z, Sang X, Chen W, Zhang X, Xiao J, Chen Y, Chen Q, Yang M, Su J 2021 · Food Funct | animal | mixed | low | Mouse model: kombucha reduced the inflammatory response in induced sepsis. |
| Tran DB, Le NKN, Duong MT, Yuna K, Pham LAT, Nguyen QCT, Tragoolpua Y, Kaewkod T, Kamei K 2024 · Food science & nutrition | animal | supports | low | Drosophila lipid-droplet-knockdown inflammation model: kombucha tea reduced hemocyte infiltration, ROS, proinflammatory cytokines, JNK activation. |
| Mfopa AN, Kemzeu R, Fokom R, Yamthe LRT, Dize D, Boyom FF 2024 · Heliyon | in-vitro | tested-null | low | In-vitro: kombucha antioxidant activity increased with fermentation time. |
| Costa MAC, Vilela DLS, Fraiz GM, Lopes IL, Coelho AIM, Castro LCV, Martin JGP 2023 · Crit Rev Food Sci Nutr | observational | mixed | low | Review: in-vitro antioxidant/anti-inflammatory activity of kombucha (from tea polyphenols and fermentation metabolites). |
| Massoud R, Jafari R, Khosravi-Darani K 2024 · Plant Foods Hum Nutr | observational | mixed | low | Review: kombucha's antioxidant/anti-inflammatory benefits are described but direct human evidence remains limited. |
| da Silva EC, Beserra MMN, Leitão MGS, Vieira Camelo Maia IF, de Souza Alves BE, Gonçalves PG, de Assis Leite DC, Neves BG, Pereira KMA, Rodrigues LKA, Gondim DV 2026 · Probiotics and antimicrobial proteins | animal | mixed | moderate | Rat periodontitis model: 4-day-fermented green tea kombucha lowered periodontal TNF-alpha ~43% and RANKL, raised osteoprotegerin vs untreated periodontitis. |
| Saimaiti A, Huang SY, Xiong RG, Wu SX, Zhou DD, Yang ZJ, Luo M, Gan RY, Li HB 2022 · Antioxidants (Basel) | in-vitro | tested-null | low | In-vitro: kombucha beverages showed antioxidant capacity correlating with polyphenol content. |
| Erol Z et al 2024 · Polish journal of veterinary sciences | animal | mixed | moderate | CD-1 mouse acute ulcerative colitis model: kombucha reduced histopathological colon inflammation lesions vs water/dairy kefir, improved gut microecology. |
Disagree, or know a study we missed?
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