Tatt2man,
That is a great pamphlet...thanks for posting it. It covers a lot!!!
It did answer my questions (for those who would like to know):
With radiation therapy use, the implications for nutrition can be profound. Since most nutritional supplements beneficial to men with prostate cancer are antioxidants, they may — in theory — block the action of radiation, thus limiting the chance of a cure. This is a very important consideration, since research studies have shown that cancer cells preferentially accumulate antioxidants like Vitamin C and lycopene.
Although no human studies have confirmed this theory, it’s probably best to limit your consumption of antioxidants (Vitamins E and C, lycopene and selenium) during radiation treatment. This means you should stop taking supplements but keep eating a variety of fruits and vegetables. For external beam radiation, supplementation should be stopped for roughly 6-7 weeks and not resumed until at least one week after your final treatment. For brachytherapy, 9 months of antioxidant abstinence are required, because it takes this long for palladium and iodine to lose their radioactivity within your body.