Legit books on healing from cancer I'd recommend:
Anticancer: A New Way of Life by David Servan-Schreiber MD PhD
Radical Remission: Surviving Cancer Against All Odds by Kelly A. Turner PhD (Author)
Cured: Strengthen Your Immune System and Heal Your Life by Jeffrey Rediger M.D.
All of these books claim to be backed by solid research, especially the first one which was written by a MD who himself was diagnosed at a young age with brain cancer and way outlived his diagnosis. Supposedly MD Anderson's integrative onco practice was based on / started by David Servan-Schreiber's approach.
I've just started to read up more on exercise - there's actually a field of oncology dedicated to scientifically measuring the effect on cancer so that 'prescriptions' can be given for types of exercise most effective for certain cancers. I'm trying to find a place that does this - I think UCLA or one of the CA institutions may focus on it.
hth