Appetite appetite levels may increase and result in an increase of food intake. Decreased desire to eat is termed anorexia, while polyphagia (or "hyperphagia") is increased eating. Dysregulation of appetite contributes to anorexia nervosa, bulimia nervosa, cachexia, overeating, and binge eating disorder. A limited or excessive appetite is not necessarily pathological. Abnormal appetite could be defined as eating habits causing malnutrition and related conditions such as obesity and its related problems. Both genetic and environmental factors may regulate appetite, and abnormalities in either may lead to abnormal appetite. Poor appetite (anorexia) can have numerous causes, but may be a result of
What Do I Have to Do is synth orienated and has multilayered vocals. Much of the synth was omitted and the drums, bass and vocals were toned down for the second album version. The third version, the 7" Mix, contains a newer drum track, multilayered vocals in the chorus and relies much less on the synthesizers on the album version. This version of the song also contains samples from American comedian Sam Kinison, and was used for the music video. Originally, "What Do I Have To Do" was planned to be released as the follow-up single to "Better the Devil You Know", but was later released