This is great advice pre treatment treatment or post treatment, (the foods) especially if you are having surgery. However a lot of the foods are antioxidant based. And if your are in radiation therapy they warn about not taking and eating high levels of anitoxidents. The radiation actually uses free radicals to damage the cancer cells - so if you kill them it will work against the rads. Healthy cells can handle too many free radicals but apparently cancer cells can't... But I will definitely use this food list post treatment.

Thanks at @joucads