The potential health risks of kombucha tea, a celebrity-favourite youth elixir | Shine On - Shine from Yahoo! Canada

Kombucha tea, hailed for its immune boosting properties, has some experts concerned.(Credit: Thinkstock)You've seen it in health-food stores, heard celebrities rave about its anti-aging properties, and maybe you've even tried it to see what all the hype is about. Kombucha tea, an originally East Asian fermented beverage made up of bacteria, yeast, tea and sugar, has been used for centuries in traditional medicine. Despite the controversy surrounding its health claims in the past decade or so, the beverage continues to be produced by a slew of mainstream manufacturers.