Gene Stone is an American writer and editor known for his books on animal rights and plant-based food..

Michael Herschel Greger is an American physician, author, and speaker on public health issues best known for his advocacy of a whole-food, plant-based diet, and his opposition to animal-derived food products.

Timothy Ferriss is an American entrepreneur, investor, author, podcaster, and lifestyle guru.

T. Colin Campbell (born 1934) studied pre-veterinary medicine at Pennsylvania State University (B.S., 1956) before attending the University of Georgia's veterinary school. He coined the term "plant-based diet" in 1980 to present his research at the National Institutes of Health and has authored over 300 research papers and four books, including *The China Study*, co-written with his son Thomas M. Campbell II.

Thomas Campbell (1733–1795) was an Irish Protestant clergyman, best known as a travel writer and for his accounts of the circle of Samuel Johnson..