I guess this book is a good start [0].

I read it, I wanted to believe it but I will not endorse what’s in there (mostly because I am now much more cautious about cherry picked slick slightly against the establishment stories).

While here I will post a book that did change my life in a rather dramatic fashion [1].

Also a good functional medicine doctor is worth every bill they charge.

[0] https://en.m.wikipedia.org/wiki/Why_We_Get_Fat

[1] https://www.amymyersmd.com/sp/the-thyroid-connection-paperba...