Atkins Nutritionals, the company behind the low-carbohydrate Atkins diet, has announced that Neil Harrison has been appointed chairman of the board and chief executive officer.

Harrison joins Atkins from US food group H.J. Heinz, where he was most recently executive vice president of the company and president and chief executive officer of Heinz North America

At the same time, Atkins said that Paul Wolff and Scott Kabak, the chairman/CEO and president respectively since 2000, will remain as members of the board of directors but will no longer serve in day-to-day operational roles. Mark Rodriguez, currently general manager of Atkins Nutritionals’ North America unit, will assume the position of president of Atkins North America.