More and more doctors are recommending their patients take a daily aspirin to prevent heart attacks and strokes. And recently, new studies have suggested aspirin might help with cancer prevention, as well. But why does aspirin help? And who really should be taking it? Lorraine Rapp and Linda Lowen, hosts of WRVO's health and wellness show "Take Care," spoke with the physician who first demonstrated the life-saving properties of aspirin, Dr. Charles Hennekens.