That's not what the senior colorectal doctor at the royal free told me last year.
So document yourself: medline is free, and with sci-hub, you can get the full versions of anything
EDIT: actually, no, don't document yourself. Ignorance is bliss. Why would I even care? After all, it's your life! And I care even less than your doctor, since we don't even have a contractual relationship (which you have with your doctor by virtue of paying him).