Heart disease is the leading killer of women over the age of 50, and heart attacks are twice as deadly for women as they are for men. Though most of us wait until midlife to take steps to prevent or treat it, heart disease actually begins in childhood—the minute we learn to start shutting down our hearts to avoid feeling disappointment and loss. In this video Dr. Northrup tells you how you can keep your heart healthy at midlife and for the rest of your life.