I've been reading about prostate stuff. Mine bothers me quite a lot.
Biologically, the DHT is the androgen that causes the problem. As stated DHT is the product of a reaction caused by 5-alpha reductase (5-ar) on testosterone.
5-ar has two types: Type I and Type II. Type 1 affects hair and sebaceous glands. Type II mainly affects the scalp and prostate.
It seems the best thing for this is using finasteride, a 5 ar type II blocker. Saw palmetto blocks both types of 5-ar, so it wouldn't hurt to "stack" the finasteride with some saw palmetto.
According to me, some other androgens may also trigger benign prostate hypertrophy (BPH). I am not a doctor or a biologist. I'm just a guy with a big prostate. So, I don't know if other androgens will definitely affect the prostate or not.
Fluoxymesterone (halotestin) can affect the prostate:
http://www.rxmed.com/b.main/b2.pharmaceutical/b2.1.monographs/CPS- Monographs/CPS- (General%20Monographs-%20H)/HALOTESTIN.html
I personally had a problem with my prostate on 1-test. Now 1-test is an androgen that cannot be aromatized, but 1-test
can convert back to DHT through an unknown process
not related to 5-ar.
As for other steroids, I cannot say. Testosterone clearly
does convert to DHT through 5-ar process and this can be prevented. Other steroids that are less androgenic (Deca, Primo, Var) may be less problematic.
As for others, such as trenbolone, I cannot say.
In any case, get your PSA levels checked if you can, take finasteride and saw palmetto, and monitor your own side effects. If you can't hold more than 500ml of urine (my case), you probably have a problem (like me).
The question has yet to be fully answered. DHT is an androgen, fluoxymesterone is an androgen, so I can say that some androgens aggrivate the prostate. Other steroids may be eligible for 5-ar, and would thus make them prostate aggrivators as well, though as stated, the 5-ar process can be prevented with finasteride and saw palmetto.
Here's an excellent read:
http://www.cancernetwork.com/journals/oncology/o0002e.htm#Introduction