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
You Don't Know What to Do that have yet to enter the main Ultratop 50 chart, and number 2 on the South Korea download chart. "You Don't Know What to Do" garnered critical acclaim amongst music critics: many complimented the disco revival and throwback style, calling it the best track on the album, and compared it to the works of Jocelyn Brown, Daft Punk, Chic and post-revivalist songs produced Pharrell Williams. Carey and Wale performed the song for the first and only time on the "Today" show in the United States. "You Don't Know What to Do" was written by Carey, Jermaine Dupri and Bryan-Michael Cox,