Berry Good for You

Long touted for their effectiveness in treating urinary tract infections, cranberries can now lay claim to even more bacteria-fighting prowess. Researchers at Massachusetts’ Worcester Polytechnic Institute have found that certain cranberry compounds alter E. coli bacteria—responsible for a host of illnesses, from kidney infections and gastroenteritis to tooth decay—and prevent them from initiating an infection. To get the most benefits, opt for the whole fruit, which has more fiber and antioxidants than juice. If juice is your only option, choose a low-sugar variety.