Mark Hyman does not advocate eating a plant-based diet but rather a plant-rich diet.

What is the Mark Hyman diet?

Hyman describes his current diet as "a cross between paleo and vegan diets." He doesn't eat much — if any — meat or dairy, and he avoids foods that are high in sugar or refined carbs. Or, in the words of famous journalist and food writer Michael Pollan, "Eat food. Not too much. Mostly plants."

Is Mark Hyman paleo?

Dr Mark Hyman's Pegan Diet is a cross between the paleo and vegan eating plans – the idea being that both paleo and vegan eating (when done well) put a lot of whole, fresh plant foods front and centre. ... If you follow an unrestricted vegan way of eating, protein deficiency is almost unheard of.