There was just a discussion on the Diabetes board about physicians and researchers with an "agenda".
Again, I have to stress personal responsibility is key for anyone seeking medical advice or treatment. The days of "don't question the doc, he knows all" are over. It's up to the patient to do the research, ask the questions and get 2nd opinions.
I worked for a medial malpractice legal firm 20 years ago. Believe me when I say doctors are not perfect.