Polyphagia uses combining forms of "poly-" + "-phagia", from the Greek words πολύς (polys), "very much" or "many", and φαγῶ (phago), "eating" or "devouring". Polyphagia Polyphagia or hyperphagia is excessive hunger or increased appetite. In medicine, polyphagia (sometimes known as hyperphagia) is a medical sign meaning excessive hunger and abnormally large intake of solids by mouth. It can be caused by disorders such as diabetes, Kleine–Levin syndrome (a malfunction in the hypothalamus), and the genetic disorders Prader–Willi syndrome and Bardet–Biedl syndrome. Knocking out vagal nerve receptors has been shown to cause hyperphagia. Causes of increased appetite include: Polyphagia usually occurs early
My Teacher Is an Alien as a means of communication among other aliens in the galaxy who are trying to decide what they want to do with humans. Susan, the hero of the previous story, tries to save Duncan when Kreeblim is out of her house, however the two of them do not get out of the house in time. At the end of the book, Peter (with enhanced eyesight and no need of glasses) and Broxholm return, and Duncan and Susan decide to help Peter prove to the Interplanetary Council, the ruling aliens of the galaxy, that the human race is worth saving. Peter