There is insufficient evidence that kombucha tea can be used as a weight loss aid, according to WebMD. It is used by proponents for premenstrual syndrome, loss of appetite, arthritis, hair regrowth, high blood pressure, and to strengthen the immune system and boost metabolism, without any scientific backing.
Kombucha tea is the fermented mixture of kombucha, bacteria, black tea, sugar and other ingredients. The drink contains caffeine, B vitamins and yeast, and is claimed to prevent cancer and improve digestive and liver functions, reports the Mayo Clinic. There are no clinical trials to support the health claims of kombucha tea advocates, and there have been adverse health effects reported after drinking kombucha tea. The drink has been further reported to be possibly unsafe in certain demographics of people, states WebMD.