Effect of Green Tea Kombucha Within an Energy-Restricted Diet on Cardiometabolic Risk Markers in Individuals With Excess Body Weight: A Randomized Controlled Trial
Abstract
Green tea kombucha is a fermented beverage notable for its rich content of bioactive compounds, yet it remains underexplored. Thus, this study aimed to evaluate the effect of green tea kombucha consumption, in combination with an energy-restricted diet, on traditional cardiometabolic risk markers in individuals with excess weight. This is a randomized controlled clinical trial in which 59 individuals with excess body weight (BMI >27 kg/m2) were distributed into two parallel experimental groups: the control group, which followed an energy-restricted diet (-500 kcal/day), and the kombucha group, which followed the same energy-restricted diet + daily consumption of green tea kombucha (200 mL/day) for 10 weeks. At the end of the study, participants in the kombucha group showed a significant reduction in total cholesterol (p = 0.024), LDL-c (p = 0.035), VLDL-c (p = 0.011), triglycerides (p = 0.012), Castelli index II (p = 0.002), and uric acid (p = 0.027) compared to baseline. Both groups (control and kombucha) significantly reduced Castelli index I (p = 0.015 and p = 0.007, respectively) and HOMA-β (p = 0.019 and p 0.05) for any evaluated marker. In conclusion, the consumption of green tea kombucha, when combined with an energy-restricted diet, shows promising cardiometabolic benefits in individuals with excess body weight.
How strong is the evidence?
Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design. Reported size: 59 participants or records.
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