People who worry that teeth whiteners might damage the enamel of their teeth should worry less about teeth whiteners and more about acidic beverages like fruit juices, and sports and energy drinks. That’s the news from researchers at the University of Rochester, where scientists found that hydrogen peroxide, the common ingredient in teeth whiteners, causes no significant change in hardness or surface enamel, but orange juice, whose acidity can be similar to some sports drinks, can decrease enamel hardness by 84 percent. If you must drink orange juice, the researchers say, drink it quickly. People who sip their drinks slowly over 20 minutes are more likely to have tooth erosion than those who finish a drink quickly. Read more in Futurity.