HGH Release

[Sgt. Hartman]

There was a thread discussing natural GH release on here the other day so I thought I would post up this study I found. It was on another forum so I won't post the link but here are the highlights. Take note at the 36 - 50 yr old age bracket that releases about the same amount of GH as a 61 - 83 yr old and less than a 51 - 60 yr old. I didn't post the cortisol graph but it inversely corresponds to GH levels.


Age-Related Changes in Slow Wave Sleep and REM Sleep and Relationship With Growth Hormone and Cortisol Levels in Healthy Men, Eve Van Cauter, PhD; Rachel Leproult, MS; Laurence Plat, MD, JAMA. 2000; 284:861-868

The youngest category, those under 25 years of age secrete about 2iu of GH per 24 hours, while those in older categories sectrete 1 iu or less.




Note that Humatrope indicates that absolute bioavailability of an intramuscular or subcutaneous dose is about 66%. So perhaps 3iu of exogenously administered synthetic GH is a replacement dose equivalent to 2iu of indogenously secreted GH.

[DCannon]

Nice post.