GH1 and Hypoglycemia: The insulin-like action of this amino-terminal segment has been confirmed in a series of GH peptide fragments including GH1-20 a.a., GH1-15 a.a. and GH6-13 a.a. All these GH fragments have been demonstrated to induce hypoglycaemia in vivo and amplify the actions of insulin in vitro (Ohkura and Hori, 2000).