Superfoods : What They Can Do for Heart Disease, Blood Pressure and Cancer

Every few months it seems, a new superfood enters the public consciousness : Acai, goji berries, omega 3, they've all had their time in the sun. But what do they really do for our health, especially in terms of fighting diseases of the heart, high blood pressure and cancer?

Dr. Arif Anwar joins us again for another installment in our ongoing genetics series, to hash it all out.