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Proteins causing daytime sleepiness also tied to bone formation, providing target for osteoporosis

Orexin proteins, which are blamed for spontaneous daytime sleepiness, also play a crucial role in bone formation, according to findings from a research team. Orexins are a type of protein used by nerve cells to communicate with each other, and have been found to regulate a number of behaviors, including arousal, appetite, reward, energy expenditure, and wakefulness. Orexin deficiency, for example, causes narcolepsy ? spontaneous daytime sleepiness.
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