My answer (prompted by a very good urologist) was to adjust my diet.  It took seven months of research, during which time I used myself as the guinea pig, and at the end of that time, I retested for PSA and the levels had returned to a very satisfying low level which was about the equivalent of a young man twenty years younger than myself.  It has been five years since my bad test results, and by applying the general principles of The Body Friendly Zen Cookbook in everyday life, my results have stayed better than the average for men in my age bracket.  

Luckily I'd taken notes as I researched.  I discovered, for example, that certain foods taken in combination were up to ten times more effective in antioxidant activity while certain other foods if taken together in effect cancel each other out and have no nett effect.  Using all this information, I believe I managed to hit on some extremely effective strategies for managing and controlling cell inflammatory diseases, and so I put together an e-book of a few hundred pages and made it available for purchase at the Zen Cookbook website.  I also have recipes and a blog related to some degree with The Body Friendly Zen Cookbook