
Originally Posted by
AnabolicBoy1981
What's prami?
Estrogen and igf-1 kinda go hand in hand. In medical research testosterone administration is shown to increase igf-1, but it was said to be from the estrogen aromatized from the test. Estrogen does stimulate GH so that would make sense. On the flip side AIs have been shown to increase IGF-1. This makes no sense since they lower estrogen. But, because they increase testosterone, i speculate that androgens have their own ability to stimulate GH/igf-1 independant of estrogen. Now nolva, a SERM, lowers igf-1 yes. it blocks estrogen by competetng for the receptor sites but more so in certain tissues than others. My question with nolva which we will never know, is will it block estrogen in the muscle cells? As estrogen has anabolic actions of its own...like glute-4 up regulation which would increase glycogen uptake, and androgen receptor density. So if it didnt block it in the muscle i might choose nolva on cycle, but we'll never know i dont think.
Anecdotely, my bro was on a-dex and test prop 100mg eod and on a dht-like progestin oral called Max LMG. 2 days after his last shot and las pill he had elevated igf-1 one levels beyong the high normal. FYI, u might be aware that test prop is less estrogenic of the testosterones also