Loading
Tryptophan and Brain Disorders · Journal article
Nutrition and Health · September 3, 2026
Early or partial results. Treat as a signal, not a conclusion.
This randomized controlled animal study found that kombucha administration reduced weight gain in high-fat diet–fed rats compared to diet alone, but found no statistically significant differences in hepatic endoplasmic reticulum stress markers despite numerical reductions. The authors acknowledge these findings as preliminary and insufficient to draw definitive conclusions about ER stress modulation.
Randomized controlled trial in animal model. Male Wistar albino rats; four randomly assigned groups (Control, Kombucha only, high-fat diet alone, high-fat diet with kombucha).. Intervention: Oral kombucha at 5 ml/kg daily for 5 weeks. Compared with: High-fat diet alone; Control diet; Kombucha alone. n = 50.
Rats treated with kombucha exhibited less weight gain compared to those fed HFD alone No statistically significant differences were observed in expression of ER stress markers (p-IRE1, ATF6, p-JNK, p-eIF2α, GRP78) Numerical reductions in ER stress markers were noted in kombucha-treated groups, suggesting potential modulatory effect rather than definitive reduction
Safety was not reported in the material analysed. Check the source before drawing any conclusion about harm.
This animal study does not yet support clinical application of kombucha for weight management or ER stress reduction in humans. The lack of statistical significance in mechanistic outcomes and preliminary nature of findings mean further research is essential before any clinical recommendation.
Small single-center animal study with a primary finding (reduced weight gain) that lacks statistical significance testing and ER stress markers showing only numerical, non-significant reductions, requiring confirmation in larger cohorts.
As stated by the source record.
Quoted from the source exactly as published.
This animal study does not yet support clinical application of kombucha for weight management or ER stress reduction in humans. The lack of statistical significance in mechanistic outcomes and preliminary nature of findings mean further research is essential before any clinical recommendation.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
BackgroundObesity is increasingly recognized as a global metabolic disease, often accompanied by endoplasmic reticulum (ER) stress, which contributes to the development of metabolic disorders such as insulin resistance and type 2 diabetes. Kombucha, a fermented tea known for its health-promoting effects, has been associated with weight loss and lipid-lowering properties.AimThis study aimed to evaluate the potential effects of kombucha on ER stress in obese rats induced by a high-fat diet (HFD).MethodsFifty male Wistar albino rats were randomly assigned to four groups: Control, Kombucha, HFD, and HFD combined with Kombucha (HFD + Kombucha). Rats in the Kombucha and HFD + Kombucha groups received oral kombucha at a dose of 5 ml/kg daily for 5 weeks. Body weights were monitored weekly. At the end of the experimental period, liver tissues were collected for analysis of ER stress markers (p-inositol-requiring enzyme 1, activating transcription factor 6, p-JNK, p-eIF2a, GRP78) using western blotting. Serum samples were also analyzed for metabolic parameters.SummaryRats treated with kombucha exhibited less weight gain compared to those fed an HFD alone. Although no statistically significant differences were observed in the expression of ER stress markers, numerical reductions were noted in the kombucha-treated groups, suggesting a potential modulatory effect on ER stress rather than a definitive reduction. Kombucha may be associated with reduced weight gain and may have a potential role in ER stress modulation; however, these findings should be considered preliminary due to the lack of statistically significant differences. Importantly, the western blot findings do not support a definitive conclusion regarding ER stress attenuation. The absence of statistically significant differences in ER stress markers represents an important limitation of the study. Further studies involving larger cohorts and longer intervention periods are needed to confirm these findings.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.