For what its worth and based on my completely uneducated lack of knowledge, me thinks you arent going to cause any "prostate" problems from a bike seat. Its a gland that is inside you. Numbness is just that, numbness. A bunch of years ago someone decided that numbness led to erectile dysfunction and thus was born the split seat. Since then I think the jury has decided that ed is either a medical or genetic problem had generally has little to do with bike seats. Numbness "down there" is still a disturbing thing (I had it for the first time last year after more than 30 years of riding, and the first year on my new Brooks). I think I had the saddle too nose high. Now it is level. I havent had the little tinglies but then I havent done more than about 60km since leveling. Tomorrow I plan on doing about 100 to 120 km so we will see if the issue "arises". I love the Brooks and am thinking it will be ok.