Hypopituitarism and IGF-1 Deficiency in American Men: GH Axis Insights
Reading Time: < 1 minute Introduction Hypopituitarism, characterized by diminished secretion of one or more pituitary hormones, represents a significant endocrine disorder affecting approximately 45 per 100,000 individuals in the United States, with a notable prevalence among males due to etiologies such as pituitary adenomas, traumatic brain injury, and radiation therapy. In American men, growth hormone (GH) deficiency—a hallmark of hypopituitarism—disrupts the somatotropic axis, leading to profoundly reduced insulin-like growth factor-1 (IGF-1) levels. IGF-1, primarily hepatic in origin and GH-dependent, is pivotal for anabolic processes, linear growth, and metabolic regulation. This article synthesizes recent clinical data from U.S.-based cohorts, elucidating how hypopituitarism alters IGF-1 dynamics,...


