Quite by accident I seem to have discovered, for myself anyway, the
cause of my prostate discomfort/BHP.  I'm 59 and otherwise in good
health.  Urologist said I had "medium" BHP, but no cancer or
symptoms.  My prostate had been giving me discomfort for about 10
years.  I used mostly saw palmetto, with some success, but the
condition continued, cycling between fair and uncomfortable for years.

Several months ago I decided to discontinue diet drinks of any kind -
both with equal and sacharine.  I was concerned with their chemical
effects unrelated to BHP.  Approximately 72 hours after their
cessation, and totally unexpectedly, my prostate discomfort ceased.
I'd estimate that it was reduced by 90% at least.  The discomfort has
not returned.  I tested the connection a few times by consuming 3-5
cans of my old diet drinks, and on cue, the discomfort returned each
time.

I make no claims for this discovery, except that my own comfort has
vastly improved.  I hope that this information may be of some benefit
to anyone who wishes to make use of it.