Kombucha has been consumed around the world for centuries as a stimulating health tonic. In modern times, scientific studies have hinted at its ability to act as an inflammation-reducing antioxidant, an antibacterial, and a potential probiotic. The drink has also been studied before for its effects on blood sugar, with one study showing that in healthy people, it was able to hold down spikes in plasma glucose and insulin when consumed with a carbohydrate-rich meal.