Hi Drybrooker,
Did you have any hormone treatment at all before or after your surgery? What you’re describing sounds like a side effect from that. Have they tested your levels?
I’m sure someone more knowledgeable will come on to post helpful information for you but I wasn’t aware that radical prostatectomy alone would affect your testosterone levels. My husband had 6 months HT before his op and his testosterone was close to zero….after his op it eventually returned to 10 when stopping HT.
Could the weight gain maybe be from taking it easy after the op?
Good luck with your ongoing recovery and hope you get some answers.
Elaine