Close to 785,000 Americans will experience their first heart attack this year, but their symptoms may be far more subtle than they realize, especially if they are women, writes Dr. John Reilly. He describes common heart attack symptoms and cautions patients to call 911 if they suspect they are having a heart attack. Reilly also outlines various treatments, such as angioplasty with stenting, and describes the lifestyle changes that may be part of recovery. "[B]ecome your heart's No. 1 health advocate," Reilly urges. "Assess your current lifestyle and see where you can make improvements. Can you eat healthier and exercise more, reduce your stress levels or quit smoking? These changes will greatly increase your odds of fighting off future heart attacks."