The book does not focus on food, per se, so is less useful than I imagined. The author's only real messages about food are to avoid highly refined foods and that everyone ought to be vegetarian in order to be truly healthy. Beyond that, he is highly focused on vitamin and hormone therapies. Particularly in the first few chapters, the author makes unsupported statements and leaps of logic to advance his arguements which puts everything he advocates into question. There are undoubtedly useful facts in the book but it is impossible to know which information is reliable and which merely sounds like it could make sense. On the whole, a disappointing read.