Baba, I was first diagnosed with non-invasive papillary and CIS bladder cancer over 8 years ago. I had two TURBs and then BCG and maintenance BCG for a period of about 2 years. Have now been cancer-free for over 8 years.
Of course once should eat in a healthy manner no matter what. However, the cancer that we have has been lurking for many years before it becomes obvious. Any effect on the cancer that a "supplement" or "diet" might have would have been needed 10, 20, or 30 years ago. The very best that we can do now is to get the very best medical attention that we can, using tried and trusted treatments.
Sara Anne