Hi Jeanne. I'm not selling anything but I do have a blog and will have an article out this Saturday on my journey with functional medicine where I'll discuss what functional doctors do and how they may differ from traditional doctors. My blog is:
jazzyoldbroad.com jj

Linda- Examples of functional medicine include acupuncture, naturopathy, massage, chiropractic medicine, osteopathic medicine, body movement therapies, tai chi, and yoga.

I am not sure if this is science-based because the concept was developed by a group of "thinkers" and not scientists. That's not to say that it doesn't work
https://www.bridgeshealingcenters.com/integrative-medicine-vs-functional-medicine/