Ok so I'm sure most of us have read posts about how testosterone lowers collagen synthesis while things like deca and equipoise raise collagen synthesis, so supposedly if you run test only cycles your gonna wear out your tendons and ligaments etc. But nowhere have I seen any scientific studies or anything to back this up. I CANT BELIEVE THIS ISSUE HASNT BEEN DISCUSSED MORE AND RESOLVED!!!! If this is true than a huge percentage of the gear users out there are gonna have destroyed bodies at an early age so i think we need to care about this issue!! Can someone please start posting some useful info. with evidence to back it up on this subject. Scientific studies are what i need to see, personal expirience is ok too but harder to get concrete evidence from, thanks to any who answer this post with something useful!!