of GHRH analogs by professional athletes may be prohibited by restrictions on doping in sport because they act as growth hormone secretagogues. See also Growth hormone secretagogue Hypothalamic–pituitary–somatic axis List of growth hormone secretagogues References Peptide hormones Hormones of the somatotropic axis Neuroendocrinology Human hormones Growth hormone secretagogues Growth hormone-releasing hormone receptor agonists