Flu is easily transmitted, so if you are working with sick people - who are most at risk for getting seriously ill - you ought to be vaccinated. I am not really equipped to say whether it should be the law or not.

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

Daily vitamins are of no value.

I have never earned one penny from any pharmaceutical company. I will never accept one penny from them either. Ever.

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

Vaccination is a public health issue because influenza is a highly contagious disease. If you don't vaccinate your child, his or her schoolmates are much more likely to become ill. That is why some places (New York, for example) are making the vaccine mandatory for school children.

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.