Dean Ornish: The world's killer diet

Stop wringing your hands over AIDS, cancer and the avian flu. Cardiovascular disease kills more people than everything else combined — and it's mostly preventable. Dr. Dean Ornish explains how changing our eating habits will save lives. TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers are invited to give the talk of their lives in 18 minutes — including speakers such as Jill Bolte Taylor, Sir Ken Robinson, Hans Rosling, Al Gore and Arthur Benjamin. TED stands for Technology, Entertainment, and Design, and TEDTalks cover these topics as well as science, business, politics and the arts. Watch the Top 10 TEDTalks on , at