There are certainly quacks out there, but there are also folks with piles of credentials who describe what they do as functional medicine, who operate strictly according to the latest science, and who have massive beneficial impacts on the patients they see, many of which who have been failed by the mainstream medical establishment.

Descriptions like the above which seek to attack and discredit any form of alternative medicine will always exist because mainstream medical practice first seeks to enrich corporations and only secondarily tries to help patients. (Not on an individual level, but structurally.)

I'd invite you to check out the YouTube channels or any of the books written by Dr. Mark Hyman or Dr. Gundry; the content they put out is incredible and has had a huge positive impact on my life.