I have experimented with the Bob Beck zapper by passing the current through affected tissue. Use on insect bites, spots, boils and bleeding gums produce immediate results. Also colds and coughs have responded with reduced mucus discharge by passing the current through sinuses and lungs, taking care to avoid passing any the current through or near the heart.
Recently arthritus in my fingers was releaved and swelling reduced by placing the terminals between my wrist and each finger in turn for 3 minutes.
What I suggest is passing a current through the prostate for a couple of minutes, I have tried it with no ill effects.
To make things easier I changed the silver terminals for TENS machine terminals which are more flexible and don't need cotton slieves or salt solution.
Dave