Bump to this old (no pun intended) thread. Interesting study done on some Ecuadoreans who are seemingly free of cancer and diabetes due to a genetic mutation that greatly reduces IGF-1, resulting from impaired reception of HGH. This is supportive of studies done in animals that increased longevity by impairment of this same gene or hormonal process. I haven't looked for the study report, but this is a NYT article:
http://www.nytimes.com/2011/02/17/sc...me&ref=general