When I was a student of nutritional therapy, about 15 years ago, I attended a lecture given by Charlotte Gerson, the daughter of Max Gerson, founder of the Gerson therapy. She was an old lady then, and she must be well into her 90's now. What I remember of the lecture is that she herself was a rather alarming shade of orange, no doubt as a result of the large amounts of carrot juice that she drinks Indeed, she did…