I had the same fears but after talking with the doctor and having him answer my questions I'm on a reg he suggested.With complete bloodwork and a strick admin of both growth and testosterone I'm feeling 20yrs younger.I've lost about 40 lbs of fat went from a 44 with a gut hanging over that.To a 38 and just a little gut.I work out just 3 times a week.So from me to you it's worth it.Now I used MEDXlife.com (it was suggested by my Doctor.But what you choose do it safe and right and only under a doctors care.
HGH is not a bad thing long as its used right. Far as the Sustanon how old are you? Sustanon is a mixture of four different testosterones (Testosterone Propionate, Testosterone Phenylpropionate, Testosterone Isocaproate, Testosterone Decanoate). Also has less water retention then other steroids. I would not take it alone. I would use some Winstrol with it also. You will need to get something for PCT (post cycle treatment)as in an anti estrogen. Due to the fact your body will stop making its own testosterone and you will end up with Gyno aka ***** **** that is if youre a guy.
If you have other questions I would go check out http://forums.steroid.com/ it is a great site to learn about that type of stuff.