Nancy, I am so sorry to hear of your brother's diagnosis, but the cure rate is quite good and he has you to help him adjust to using a ketogenic diet. The book includes the evidence that doing Keto while also receiving conventional chemo or radiation reduces the side effects. I have read that anecdotally in comments on Collin Champs site (believe he mentions it in his IHMC talk too). Very interesting that your brother found this book, since Dr Neal Barnards' PCRM markets their vegetarian diet, the Cancer ProjectDiet, in Cancer clinics. Things are changing.