Updated: May 19, 2021 17:43 IST Dr Mark Hyman, functional medicine practitioner, on his book The Pegan Diet, food practices and food habits to adopt, and what elements to pick from paleo and vegan Share Article AAA Dr Mark Hyman, functional medicine practitioner, on his book The Pegan Diet, food practices and food habits to adopt, and what elements to pick from paleo and vegan In his new book The Pegan Diet: 21 Practical Principles for Reclaiming Your Health In A Nutritionally Confusing World, American physician Dr Mark Hyman, who practises functional medicine, talks about getting our food from “a farmacy not a pharmacy”. In effect, he says food is medicine.