Sleep Board Review Test 1

16. Which of the following hormones are increased early in sleep?

a. prolactin

b. growth hormone

c. cortisol

d. a + b

e. a + c

Answer: d Prolactin and Growth Hormone

Prolactin and growth hormone are both primarily secreted during sleep (particularly during slow wave sleep) and secretion is inhibited by arousals. Cortisol is strongly circadian linked and typically has a maximal level between 0400 and 0800 hrs.

Reference:

Bowman TJ. Review of Sleep Medicine, Butterworth-Heineman Medical 2002, Chapter 3

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