The jury is still out on the long term side effects of hgh.
The obvious signs being; distended abdomen, cranial distortion, elbows, jaw, forehead and organ enlargements etc etc.
In some bodybuilders the 'sides' appear obvious in others, very subtle.
I think Ronnie errs on the subtle side. While the Kovaks and Palumbos are obvious abusers.
The lesson here is, experiment at your own peril.