The math is simple. Cardiovascular disease is the number one killer of women. Eighty percent of it preventable. Mehmet Oz, MD, and Michael Roizen, MD, boil it down to the 10 things we should all be doing. Plus, lower your risk of heart disease and feel years younger with advice from Dr. David Katz.Try Dr. David Katz's simple food swaps.Heart smarts from Dr. Oz and Dr. Roizen.