In preparation for a career in academic medicine, I worked as a medical house officer at Columbia-Presbyterian Hospital from 1966 to 1968 and then joined Ira Pastan's laboratory at the National Institutes of Health as a Clinical Associate.

I had learned that science is a rewarding, active process of discovery, not the passive absorption of what others had discovered.

Anyone graduating from medical school in 1966 had first to fulfill military service before launching a career. Fiercely opposed to the Vietnam War, I sought to avoid it through an assignment to the Public Health Service.

The public schools I attended were dominated by athletics and rarely inspiring intellectually, but I enjoyed a small circle of interesting friends despite my ineptitude at team sports and my preference for reading.

Obviously, cancer has affected my life, mostly everyone in the world in some level.

The flip side of suicide is that it leaves a lingering question in the minds of the people who survived. It's like a cancer that's metastasized. The suicide is the cancer and the metastasis is all these people saying, Why? Why? Why?

I'm just trying to spread the word and upturn the myth that actually you should be resting after cancer treatment. You shouldn't; you should be getting out and doing any kind of exercise you can. You don't have to run a marathon, but you just have to up your activity levels.

We will continue to do all we can to protect the public health against these dietary supplements that have been found to cause serious illness and injury.