Prostate Cancer in Remission, Told To Avoid Spicy Foods?

Last Fall my 68 year old freind had surgery to remove PC, and says he's now cancer free, and the MDs told him to "avoid spicy foods". Then I told him Cayenne is supposed to kill prostate cancer cells. Why would they tell him to avoid spicy foods? My initial feeling is that they're idiots.

Would love to hear a little (or a lot, whatever she has time for) of what Uny has to say about this one, so I can relay it to my friend.

Joe