Yes,it is sad that our doctors don't take time or interest in helping us do better while fighting cancer. However, it's up to each individual to seek the help from a doctor who DOES give them the time, attention and advice they need to feel better while under their care.
I had an oncologist who "went by the book" with chemo treatments...but had absolutely nothing to say about my diet or exercise. I asked around and found another oncologist, in the same office, who DOES believe in nutrition, supplements and keeping our bodies active while fighting cancer. It didn't take me long to switch oncologists! I also found a "Wellness Place" nearby that has various programs aimed at helping cancer patients to live as well as they can while undergoing chemo. One of the programs is to have a licensed nutitionist come and speak about guidlines for eating healthy during chemo, and to offer their services for meal planning, etc.