I have not looked into creatine. I will try to read about it.
In general, whenever you have a self-regulatory system which is propped up by an exogenous supplementation, the challenge is how do you avoid crashing the system when you withdraw the exogenous element. I guess slow withdrawal is better but would it be sufficient - I don’t know.
The AR is upregulated in PFS. The reason for this, I believe, is that AR is negatively regulated by DHT. When DHT is low, AR gets upregulated. Notice that my theory is based on the assumption that it is the opposite with 5ar2 - there is a positive regulatory effect of DHT. There are papers that show this for 5ar2 but not for 5ar1. In any case, things are definitely more complicated than this simple model.
I don’t think it is correct to say that DHT gets depleted from exercise. It is indeed increased by exercise though through upregulation of 5ar. Interestingly, AR is also increased by exercise. So the entire system is forcibly put into overdrive by exercise to increase androgen signal.
NB!
I hope I will write a separate post about this but I have already noticed the effects of resistance exercise on increasing DHT in the muscles/joints. My joints/muscles are DHT insufficient and as a result there is inflammation, which results in extreme joint pain (I have provided a paper about this in the thread above). I control the pain with exogenous DHT.
Since I have started exercising, the pain has gone down significantly and I require a lot less DHT. I have lowered my DHT to less than half what I needed before to remain pain-free. I don’t know yet if this effect will be permanent but I guess I would have to do this for longer.
While I have no doubt this is working in muscles/joints, the question is can it also work in peripheral tissues such as pudendal nerve, penis, prostate, etc? From what I have seen in the literature it can but the effect on 5ar there might be smaller, so it might require a bigger exercise load/full body effort, plus might take much longer.