Human Growth Hormone (HGH), a peptide hormone with 191 amino acids, is a large, complex molecule secreted by the anterior pituitary gland (located in the brain) into the bloodstream.
Most HGH produced by the pituitary gland is produced at night during Stage III and IV of the sleep cycle.
HGH is commonly referred to as the "youth hormone," as it supports cellular regeneration and helps keep us looking and feeling young.
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