Hi Colin, welcome to the forum 🙂 No, haven't read the book and wouldn't spend money on anything claiming a 'complete reversal of Type 2'. Many people are able to manage their blood glucose levels by adjustments to their diet and activity level, but they will still have diabetes, which would be shown fairly quickly if they returned to an unsuitable diet and lifestyle. Some people will never manage to control their blood glucose levels without medication whatever they do, because Type 2 is not a single, simple condition, but a whole spectrum that can have a similarly large number of causes and consequences. The problem with these kinds of claims is that those who cannot succeed (whatever they may do) are then made to feel as though it is some sort of personal failure - that they could do it if they really tried, which simply isn't true.