Want to learn more about heart murmurs and what causes them? Can eating meat cause blocked arteries from the cholesterol? Does smoking affect your heart, and if so, how? Is it possible to reverse heart problems in the elderly? Does alcohol reduce the risk of heart disease? What is cardiac catheterization? What is invasive heart valve surgery? For the answers to these and many more questions, please join a live chat with Thehealthnetwork.com's guest Larry Stephenson, MD .