Black tea has been reported to have anti-oxidant properties, including free radical scavenging and metal chelating ability. Also, its anti-inflammatory effects were reported to be excellent, and it was confirmed that green and black tea leaves possess similar anti-inflammatory effects.

People make a beverage with black tea by fermentation Kombucha is a fermented drink made with black tea, sugar, bacteria, and yeast. After fermentation, kombucha becomes carbonated and contains vinegar, B vitamins, enzymes, probiotics, and a high acid concentration. It has many health benefits, such as improving gut health, strengthening the immune system, and reducing cholesterol levels. Also, kombucha contains antioxidants that help fight molecules in the body that can damage cells