yes

and those studies show prolonged use of really high doses cause problems, not recreational doses or bb doses
if you have a problem with me saying he's a parrot for suggesting upping the test please explain why, I keep seeing people say "up the test" in regards to deca/tren dick...
and to lunacy, yes Prolactin from tren can reduce sex drive
"Prolactin – Prolactin is known to decrease sexual desire, and at chronically elevated levels, it can also lower testosterone levels."
http://psychologytoday.com/articles/pto-2390.html