The decrease in incidents of death from cancer is largely attributable to new medicines or therapeutics. Perhaps a third is attributable to changing our environment, and that includes of course smoking which I believe accounted for probably 20 percent of deaths from, certainly from lung cancer, more than that from lung cancer, but from cancer overall.

The key to HIV/AIDS was to say let's give a patient multiple different therapies at the same time and that makes the virus much less likely to mutate.

There are clearly environmental factors that can decrease the incidence and death from cancer. I would still say though that the majority of cancers cannot be prevented at this point, but they can be treated and they can be treated two major ways.

Hepatitis C was a devastating disease but because fundamental research was done in hepatitis C, it is now curable. It is now absolutely curable with new medications. So this is transformative.

Precision medicine is diving into the DNA with a knowledge that everybody's tumor has a unique genetic profile and you want to be able to identify that specific piece of DNA that has become mutated and that is driving cancer growth.

The biggest risk factor for cancer is aging.

If one has a routine colonoscopy at the age of 50 and then colonoscopies thereafter as the physician recommends, you could largely prevent colon cancer, you could detect it in its very earliest stages and cure it.