This is something I hear about a lot. It works quite well for some people, I know a few people that have done this two or three times and ended up having multiple metastasis. This needs to be done very carefully keeping an eye on your PSA.

The guy that runs the CSC bimonthly online Prostate cancer meetings has BRCA2 and did this a couple of times and now lights up like a Christmas tree on a PSMA pet scan. Be careful.