Feedback Loop Causes a Rise in Testosterone on Propecia – Finasteride?

I read this blog entry HERE and there’s something I just don’t understand. You say that the body’s feedback loop causes raised testosterone levels in men that are taking finasteride. I thought the rise in testosterone was caused by the fact that finasteride prevents the conversion of testosterone into DHT, thus leaving more testosterone in its original form. I thought that the feedback loop DECREASES artificially raised testosterone levels caused by finasteride. You are saying the feedback loop causes a rise in testosterone on finasteride, and that makes little sense to me. Have I got this all wrong?

There are reports that serum testosterone levels rise when finasteride is used: “Finasteride treatment led to a generally modest increase relative to placebo in serum testosterone, with the greatest increases occurring in men with low baseline testosterone levels.”
Even my colleague Dr. Bernstein writes about it HERE We also wrote about it yesterday: HERE