Actually, Reams tended to find himself in the sights of local medical societies instead of the national AMA. This usually came about when too many of their patients started preferring gentler, kinder treatments that zeroed in on bodily dysfunction via analysis, rather than diagnostic guessing. While Reams steadily denied he was a medical doctor ("neither am I posing as one"), he did have an ego and was not so inclined to turn away a loving "Doc" now and then from a grateful client. Guess what?---that can get you charged.
Trying to explain away the charge in a courtroom to a letter-of-the-law judge is a tough job. And only a foolish person would think that having one or more people testify of the incredible help you got from "Doc Reams" might mitigate "practicing medicine without a license". No, that merely proves the charging document is true. You can almost see the glee in the eye of an AMA representative sitting in the back of the courtroom as a prosecutor lets the defense make the prosecution case.
From my seat it appears that if you truly wish to help your fellow man through dietary reform, then the most safe path to avoid the wrath of the AMA is to openly practice Unlicensed Practice. This book has merit even if you are a licensed MD and you wish to use urine/saliva analysis in lieu of the long-dominant cut/burn/poison paradigm urged by such as the PDR.
Yes, there is a way to help your fellow man but you are not apt to avoid trouble if you think you can simply photocopy a form in a book and use it as a shield against laws originally intended to keep you from competing with an established money machine. Do your homework.