Think about it: Heart disease and diabetes, which account for more deaths in the U.S. and worldwide than everything else combined, are completely preventable by making comprehensive lifestyle changes. Without drugs or surgery.

People tend to think of breakthroughs in medicine as a new drug, a laser, or a high-tech surgical procedure. They often have a hard time believing that the simple choices that we make in our lifestyle. What we eat, how we respond to stress, whether or not we smoke cigarettes, how much exercise we get, and the quality of our relationships and support can be as powerful as drugs and surgery. And they often are.

Whether it's by helping us search for health-related information, connecting us with doctors through online portals, or enabling us to store and retrieve our medical records online, the Internet is starting to show the promise it has to transform the way people interact with and improve their own health and wellness.

I am as non-accepting of medical quackery and unscientific approaches as anybody else. I've grown up as a card-carrying scientist, and I know the power of science to answer questions, and for many questions I don't know of anything better than scientific approaches to answer them.

I usually find that the process of discovery is more interesting than the answers.

One of the reasons my father ... became a dentist was so he could always be home for dinner and spend weekends with his family. At one point he had thought about being a musician, but he said, I'm not going to do that because I'd be on the road all the time and I wouldn't be with my family.

We all have an inner teacher, an inner guide, an inner voice that speaks very clearly but usually not very loudly. That information can be drowned out by the chatter of the mind and the pressure of day-to-day events. But if we quiet down the mind, we can begin to hear what we're not paying attention to. We can find out what's right for us.