These include the syndrome of inappropriate antidiuretic hormone secretion, impairment of the growth hormone (GH)—insulin-like growth factor 1 (IGF-1) axis, male hypogonadism, dehydroepiandrosterone sulfate deficiency, and the so-called non-thyroidal illness syndrome (NTIS) [12–14]. This evidence concerns the gene IGF1 and hyperinsulinemic hypoglycemia, familial, 4.