“Samples of urine and blood were analysed before and after the trial began to see if there was any effect on the body from the ingredients known to be found in kombucha, such as certain polyphenols.
In this aspect, the trial produced positive results. The researchers found identifiable markers showing an improvement in levels of compounds which are associated with better health.
However, the question the trial had set out to address – does drinking kombucha also help manage stress – showed no effect in a stress response test on participants.”