Twenty years ago, when Nieca Goldberg was in medical school, heart disease was known as a “man’s disease”―something most apt to befall a 55-year-old businessman. Today the disease is the number one killer of U.S. women, claiming nearly 500,000 lives annually. Goldberg, now 50, devotes her career to helping fellow females protect their hearts at Total Heart Care, her practice in New York City. She also teaches the science of heart health as a clinical associate professor of medicine at New York University. But the doctor doesn’t have to look to research for evidence that diet, exercise, and stress management can prevent future problems. Even though she has a family history of heart disease, her habits have kept her health in check. “Making consistent, small, smart choices can have a huge effect,” says Goldberg. To find out how to care for your heart for the long haul, learn from this doctor’s daily practices.