The American Academy of Family Physicians (AAFP) found Functional Medicine lacking in evidence and said some treatments are harmful and dangerous. The AAFP is right and should stick to its conclusions.
What do vitalism, old school chiropractic subluxations, germ theory denial, detox supplements, marketing gimmicks, and practicing way beyond a reasonable scope have in common?
If the "central dogma" of alternative medicine is that wishing makes it so, one of the most important of the other organizing dogmas of alternative medicine is that "toxins," whether they come from inside or outside, are making us sick and that we can't be healthy until we "detoxify." This is far more a religious belief than a science-based one.