According to that blog's author, who is a professor, he just happened to talk with a fellow professor friend with expertise in exercise physiology after reading from another expert that HGH does nothing. And his professor friend essentially said, "Duh!" Apparently reporters never bothered to ask any expert in HGH, else this would have been a non-story for a long time. Here is some excerpts:
Me: What do you think of this argument?
John: Oh yeah, I agree with him. This isn’t even controversial in exercise physiology.
Me: Why haven’t I heard about this in the media?
John: I guess no one has asked anyone in the profession to comment. People think andro works, and that is laughable.
Me: How does HGH work?
John: Unlike anabolic steroids, growth hormone doesn’t target muscle, everything grows. You will get bigger muscles, but you’ll also do things like enlarge your organs. In an adult who has finished growing, it’s going to result in acromegaly. Remember Andre the Giant’s gut? That wasn’t fat. That’s where his organs had to go because there wasn’t room in his chest cavity.
Me: But, doesn’t the subject benefit from bigger muscles.
John: There is no evidence of this. It seems that the muscle that is developed is abnormal and not mature. I’ll point you to some studies (see below).
Me: Wow. So you think there are no performance-enhancing benefits to using HGH?
John: Little to none, especially in baseball. An offensive lineman in football might benefit just from gaining mass, but there are probably easier and cheaper ways to gain mass—HGH is very expensive. If I were to use PEDs, I’d take steroids and there is no way I’d even touch HGH. If benefits to taking HGH exist they are tiny, and the health consequences are not pretty.
Don't that sound lovely, "your organs grow and has no place to go."
There goes another thing that Bonds has been accused of taking and helping him out. All he needs to do is have another outstanding season and that should prove to his detractors that, if he had used steroids, even inadverdently because of his friend giving it to him unknown to him, it was of little help to Bonds, because, with all the scrutiny he is under, plus government agents bringing their vendetta against him full-steam, there is no way he could be receiving any PEDS of any sort unless it is one of those sold in your local vitamin or health store.