It's long been a marker for potential heart disease. What is it? Why is it? And how do we control its formation deep in our bodies. Dr. Diehl talks about cholesterol and ways we can keep from acquiring too much of it and, if necessary, remove some of what we already have.

Chronic disease doesn't recognize political boundaries. Thankfully, neither do cures. One surprising source of curiosity is Lithuania, a small country tucked between Russia and Poland. Representatives came to Loma Linda for answers. Dr. Hans Diehl welcomed them.

A controversial article in The Permanente Journal, voice of giant health insurer Kaiser Permanente, identified nutrition as a source of healing. Its author, retired obstetrician-gynecologist Dr. Herbert Sorensen, shares his unique vision for the future of health care.

The American Medical Association has recognized obesity as a disease. This controversial ruling adds pressure to health officials around the world to rethink how obesity is approached and treated. Dr. Diehl explains.

It's a study that laid the foundation of many more studies. The now famous Framingham Heart Study asked a simple question: Who is at risk for heart disease? Answers poured in over the years. Dr. Castelli was its third director and shares what's been learned.

In 1977, a young doctor performed a study that proved, for the very first time, that comprehensive lifestyle changes could not only stop the progression of coronary artery disease, but could actually reverse it. Dr. Dean Ornish tells his story.

We are what we eat. Sometimes that fact works in our favor. Sometimes, it conspires to do us in permanently. Dr. Popper, executive director of the Wellness Forum in Ohio, shares her expertise on nutrition, medicine, and optimum health.

When modern medicine works, it works wonders. We've come to depend on science to see us through many of our ills. But there are times when we need something more. Dr. Diehl suggests that many of the answers we seek are found in a very unlikely place.

Modern medicine is a "good news, bad news" conundrum. Sometimes it works beautifully. Other times if fails miserably. Knowing what works and what doesn't could save your life. Dr. Diehl offers powerful suggestions.

Consider this: We know more about the human brain than ever before. We've got powerful medicines that can change the way we think. So, why has mental illness skyrocketed? Pulitzer Prize finalist Robert Whitaker reveals the hidden truth.