HGH was synthesized by Eli Lilly, and is produced by genetically odified e coli bacteria.
I have taken Lilly Humatrope HGH (and some Korean-made LG called Eutropin) for over two years. It is free of any contaminant that can cause spongiform encephalopathy.
I have to tell you that I am still bald, my hair is grey, and my body fat, while reduced is still with me, is reduced in quantity.
What I can say for sure is that my IGF-1 levels are normal now, not virtually non-existent as they were, and my energy level is much improved.
I plan on continuing to take injectible HGH for as long as I live.