De mortuis nil nisi debunkum
I wouldn't care to comment on whether this guy's medical credentials are genuine or came free with breakfast cereal, but he - and his chief fan Betty Martini D.Hum (Doctor of Humbug?) - have been responsible for one of the longest-running internet hoaxes ever (begun 1995 and still going strong - I was sent it today on Facebook). So I suppose even if his medical work was worthless he has achieved a kind of immortality.
At least unlike his fellow hoaxers who have devoted their lives to persuading people not to have their children vaccinated with the MMR triple vaccin (against Measles, Mumps and Rubella) Roberts has not been directly responsible for thousands of dead or disabled children. He was just a harmless attention-seeker.
For more health hoaxes, see here. I'm sorry to discover that the breast ogling one is a hoax: I was looking forward to increasing my lifespan that way. Guess it's back to the broccoli.