GH1 and brain injury: One of these treatments consists of the administration of growth hormone (GH), a hormone that, together with its mediator insulin-like growth factor (IGF-I), plays a key role in fetal neurodevelopment [16,17], but also significantly contributes to enhancing the effects of rehabilitation after a brain injury in animal models [18,19,20,21,22,23,24,25,26] and human patients [27,28,29,30,31,32,33,34].