Hi David,
I exercised since I was 15, up until cancer put and end to that, and had read that often. There is a nutritional formula for cancer nutrition similar to BMI, and for adequate hydration, which basically comes to half your weight, that I also read in a medical oncology book I have ( $$$). I'll try to find which book it is, but I probably have 25 or so. Maybe Principles and Practices of Head and Neck Surgery and Oncology or Head and Neck Cancer..not sure. These books have several hundred pages, and wish I recall 1 percent what I read.