Communication across systems is reliant upon various hormones which interact on the regulation of glucose homeostasis, bone metabolism, and muscle development. While it is well-established that bone and muscle growth are dependent upon fuel utilization, factors secreted by bone and muscle have been recently shown to play an interactive role in glucose homeostasis. Data derived primarily from animal models have demonstrated maintenance of physiological levels promote optimal growth and development, whereas these hormones appear to have adverse effects when levels are altered. While the data in animals is compelling, translation in humans has not been conducted.