Narcolepsy pp 227-237 | Cite as

Appetite and Obesity

  • Alice Engel
  • Norbert Dahmen


Orexin (hypocretin) plays an important role in promoting wakefulness [1]. It stimulates wakefulness when injected in the cerebral ventricles, in the periventricular nucleus, dorsomedial hypothalamus, or lateral hypothalamus [2, 3]. Orexinergic neurons originate from the lateral hypothalamus and have projections to most parts of the central nervous system including the brain stem. The lack of orexin and/or orexin receptors is linked to narcolepsy [4–6].


Appetite Obesity Body mass index Orexin Hypocretin Obesity Leptin Ghrelin 


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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Department of PsychiatryUniversity of MainzMainzGermany

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