In addition, to dieting, consider your words, thoughts, and what you focus on. These affects us physically, I believe the study on this is known as psychosomatics.

For example, notice your avatar / zombie, and even name 'fatal wishes'.

Consider changing the name, and pic to something more positive, at least until the cancer is healed.

Same with your environment, consider listening to more positive music, book, images, etc.

Also pray daily.