Mark Sisson (born July 20, 1953) is an American fitness author, food blogger, and a former distance runner, triathlete and Ironman competitor.
[5] As part of this initiative, he started a food blog, "Mark's Daily Apple," in 2006 and has also written a number of diet and exercise books,[6] including the bestselling book, The Keto Reset Diet: Reboot Your Metabolism in 21 Days and Burn Fat Forever.
[8] He was asked to step down from the roles due to conflict of interest in 2003 when he started his own dietary supplement company, Primal Nutrition.
[8] In 2015, Sisson and Morgan Buehler co-founded Primal Kitchen, "an authentic, premium and growing brand that ... offer[s] health-conscious consumers the best possible choices in Condiments, Sauces, Dressings and Healthy Snacks."
In 2018, Kraft Heinz announced a definitive agreement to acquire Primal Kitchen for approximately $200 million.