Rock Doc

By DR. E. KIRSTEN PETERS

It certainly sounded like a fad to me. A while ago I caught a program on public television about a medical doctor in Great Britain. Dr. Michael Mosley, like millions in both that country and in the U.S., found that in middle age he needed to lose weight and lower his blood sugar and cholesterol levels.

Mosley works as a journalist for the BBC and has decades of experience talking with scientific researchers on a whole range of topics. In connection with one of his programs, he had a MRI of his body. The scan indicated he was "thin on the outside, fat inside," meaning h...