Dr. Steven R. Gundry

Steven Robert Gundry (born July 11, 1950) is an American physician, low-carbohydrate diet author and former cardiothoracic surgeon. Gundry is the author of The Plant Paradox: The Hidden Dangers in "Healthy" Foods That Cause Disease and Weight Gain, which promotes the controversial and pseudoscientific lectin-free diet. He runs an experimental clinic investigating the impact of a lectin-free diet on health.

Gundry has made erroneous claims that lectins, a type of plant protein found in numerous foods, cause inflammation resulting in many modern diseases. His Plant Paradox diet suggests avoiding all foods containing lectins. Scientists and dietitians have classified Gundry's claims about lectins as pseudoscience. He sells supplements that he claims protect against or reverse the supposedly damaging effects of lectins.