From my own experience of reversing cancer tumours with vitamin C, it does seem to indicate a very strong role for the immune system, and a probable link to some sort of viral mediation in cancer.
I am now 3 years and 2 months past my terminal diagnosis, and well past the 1% survival probability, and I appear to be tumour free. This on a RAVE vegan diet and high dose vitamin C (1g per 12Kg bodyweight of pure L-Ascorbic acid dissolved in water twice daily), plus lots of fresh fruit and vegetables.
4 times I have made tumours go away by diet alone, and 4 times I have had them surgically removed and histologically identified.
A small sample of one, and rather convincing to me as that one – particularly as my life insurance paid out, given the expert prognosis of imminent death.
Being sent home with the medical note “palliative care only” was not on my life plan. I was a carnivore – hunter and fisherman – dying, now vegan and alive. Not an easy transition.
I have noticed that my varicose veins have gone away, and I no longer get severe lactic acid burn when I exercise.
My thought patterns appear particularly clear – as a computer programmer I am more effective and faster.