A new technique to elevate night time growth hormone release and a potential growth hormone feedback control loop
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Updated: Oct 7, 2026

Parallel Measurement of Circadian Clock Gene Expression and Hormone Secretion in Human Primary Cell Cultures
Published on: November 11, 2016
1Department of Medicine, University of Southern California, Los Angeles, USA. tyParr@compuserve.com
Abstract:
A new technique for controllable elevation of night time growth hormone (GH) release in adult humans involves a synergy between oral intake of the naturally occurring compounds acetyl-L-carnitine (500 mg) and L-ornithine (25-100 mg) taken at night time sleep after a 3 to 4 hour fast. The set point for normal hypothalamic GH release appears to include a 'whole body' mitochondrial State 3 status 'feed back loop' controlled by systemic acetyl- L-carnitine levels.
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