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Somatotropic Signaling

Meaning

The complex endocrine communication pathway initiated by Growth Hormone (GH), a peptide hormone, which primarily regulates somatic growth and metabolic processes throughout the body. This signaling axis, centered on the pituitary gland and its downstream mediator IGF-1, is essential for maintaining lean body mass, bone density, and glucose and lipid metabolism. Functional integrity of somatotropic signaling is a key biomarker for vitality and biological aging. Imbalances in this axis are associated with significant metabolic and physical health consequences.