I've seen my mother and father dwindle in health while following a 'Whole Food Plant Based Diet' over the last five years. They followed it to a T, going to see Campbell more than once. They have both suffered G.I. issues, connective tissue problems. My mother's osteoporosis is now bordering life threatening. Once fish and dairy were re-introduced, they got better. The level of zealotry made it difficult to talk to them about their condition.