My nurse says the following:
Zinc is in oysters, liver, meat and pulses.
Selenium is in fish, meat and cereals and brazil nuts are very rich in Selenium.
Zn and Se are reckoned to be good for reducing benign prostate hypertrophy. (Simple enlargement causing bladder difficulties.)
We call Brazil nuts Selenium pills here! Magnesium Citrate is also recommended.
My daughter (GP) tried to get me onto Cranberry juice but I couldn't stand the stuff!
With all these metals, watch out for the security detectors at check in.