steroids permanently change muscle structure and hgh

[yunusmile]

Steroid Nation: Studies suggest anabolic steroids produce long term changes in muscle structure

 

[tryionlannister]

Interesting

 

[Nelson Montana]

It depends on how they're used. If you do a big ass cycle and gain 30 pounds and never cycle again, I doubt there'd be any change whatsoever. But smaller gains , interspersed with recovery and maintained over the course of a few years will definitely alter muscle structure.