I know I used oxy for my back after surgeries for about 7 months. I know it's had an ill effect. I actually had my testosterone checked and it was a bit low. After I stopped, my levels came back up to normal. Also, Im more prone to bruising as well. I assume thats from low iron.
I too am very worried about long term oxy use i dont take that much but have been takeing for 5 or 6 years, i suffer from severe chronic pain and would love to not take anything but to have any normalicy in my life i have no choice.
I am sure there have been but not that I know of. I am not too sure about the long term damage of oxy use. I know that long term opiate use can cause liver damage. Other then that, I can't say I am sure.