"There is no evidence that steroid use has altered home run hitting and those who argue otherwise are profoundly ignorant of the statistics of home runs, the physics of baseball, and of the physiological effects of steroids." -- Professor Arthur DeVany, "Steroids, Home Runs and the Law of Genius"
Quoted on http://steroids-and-baseball.com/actual-effects.shtml
"A review of clinical studies among healthy, normally aging individuals found that hGH supplementation does not significantly increase muscle strength or aerobic exercise capacity." --http://www.sciencedaily.com/releases/2008/06/080617160837.htm ( American Medical Association )
(http://www.sciencedaily.com/releases/2008/03/080320132224.htm), Stanford Medical School
The Garvan Institute of Medical Research in Sydney, Australia(http://www.sciencedaily.com/releases/2008/06/080617113743.htm)or
The Mayo Clinic: http://www.mayoclinic.com/health/growth-hormone/HA00030
J.C. Bradbury: http://www.sabernomics.com/sabernomics/index.php/2007/04/i-dont-worry-about-hgh-in-baseball-and-neither-should-you/
Bradbury's follow-up: http://dberri.wordpress.com/2007/04/24/rumors-experts-and-human-growth-hormone/
Annals of Internal Medicine: http://www.annals.org/cgi/content/full/0000605-200805200-00215v1?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&fulltext=athletic+performance&searchid=1&FIRSTINDEX=0&resourcetype=HWCIT
ABC NEWS: http://www.abc.net.au/news/stories/2007/06/04/1941168.htm
First-hand comments: http://forum.bodybuilding.com/showthread.php?t=6916111
Reaction to Newsday article no longer online: http://www.baseballthinkfactory.org/files/newsstand/discussion/newsday_doctors_hgh_alone_doesnt_help_athletes/
Where's the on-field proof that they actually work ... : http://www.nytimes.com/2007/12/22/opinion/22cole.html?_r=1&ex=1356066000&en=38ae29f2075786cc&ei=5088&partner=rssnyt&emc=rss
... for pitchers?: http://www.washingtonpost.com/wp-dyn/content/article/2006/04/29/AR2006042901195.html
And the New England Freakin' Journal of Medicine (http://content.nejm.org/cgi/content/full/348/9/779).
Pretty much every website that says HGH works is trying to sell it to you.
You better be damn sure about something before you stick a needle in someone's arm.
A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die and a new generation grows up that is familiar with it. --Max Planck
Faced with the choice between changing one's mind and proving that there is no need to do so, almost everyone gets busy on the proof. --John Kenneth Galbraith
Major h/t to Eric Walker