Daily vitamins are of no value.

There are always potential side effects for every vaccine.

I understand the horrors of having no insurance, but, believe me, eight hours of sleep and good meals are NOT going to prevent you from getting sick. Don't gamble with your life; it's a stupid bet.

In the Internet age, with the screaming on the radio, etc., it is hard to know what to believe and who is informed and who is not.

Benjamin Franklin refused to have one of his children vaccinated against smallpox. The four-year-old boy died, and Franklin wrote later of how mistaken he was to expose him to the needless risk.

I think it is true that you can eat extremely healthy food at McDonald's, and you can eat amazingly badly at Chipotle.

I started to write about science and medicine at the Washington Post, in the early days of the AIDS epidemic.