Effect of Green Tea Kombucha Within an Energy‐Restricted Diet on Cardiometabolic Risk Markers in Individuals With Excess Body Weight: A Randomized Controlled Trial

) 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 < 0.001, respectively) after the intervention. Only the control group showed a significant increase in glycated hemoglobin (within reference values) compared to pre-intervention (p = 0.004). Furthermore, men in the kombucha group showed a significant reduction in glycated hemoglobin compared to men in the control group (p = 0.010). However, in the total sample (Δ = final - initial), no significant differences were found between the control and kombucha groups (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.