has been discredited for his claims that lectins cause inflammation (equals quack)
https://en.wikipedia.org/wiki/Steven_Gundry
He is best known for his disputed claims that lectins, a type of plant protein found in numerous foods, cause inflammation resulting in many modern diseases.[5] His Plant Paradox diet suggests avoiding all foods containing lectins.[6] Scientists and dieticians have classified Gundry's claims about lectins as pseudoscience.[6][7] He sells supplements that he claims protect against or reverse the supposedly damaging effects of lectins.[8]