IN BLANKSTARE NEWS: Worst beverage when it comes to staining your teeth?

What do you think is the worst beverage when it comes to staining your teeth? Red wine? Nope. Coffee? Nope. Turns out, the answer is tea. According to dentist Inna Chern, it’s the high levels of tannins in tea that make it the worst teeth-staining culprit. But not all teas are equal. Black tea and oolong tea have the highest concentration of tannins. Green tea has much lower levels and most herbal and caffeine-free teas have none. (Well & Good)