Normal TRT dosage I seriously doubt it. Cycle dosages maybe but I haven't experienced any immune system issues. Tren on the other hand first hand experience fact yes it can.
Hmm. I'm gonna say no. That you might train harder and so stress the immune system is a given. We have addressed recovery a bunch of times. You'll need more rest if you train harder etc
i was going to say using moderate or more amounts of test can stress the immune system but you bring up a great point that too little is not good either
most steroids across the board will ding up immune system, but ones like primo can actually boost it
i would recommend guys do 5 day water fasts 3-4X per year for immune health to clean out old cells