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
What Is to Be Done? (novel) What Is to Be Done? (novel) What Is To Be Done? (; also translated as What Shall We Do? and literally translated as "What To Do?") is an 1863 novel written by the Russian philosopher, journalist and literary critic Nikolai Chernyshevsky. It was written in response to "Fathers and Sons" (1862) by Ivan Turgenev. The chief character is a woman, Vera Pavlovna, who escapes the control of her family and an arranged marriage to seek economic independence. The novel advocates the creation of small socialist cooperatives based on the Russian peasant commune, but oriented toward industrial production. The author promoted