· THE QUESTION Traveling between time zones or working odd hours can wreak havoc on sleep. So, too, can certain medications or health problems. Might this be ameliorated by supplements of the hormone melatonin -- thought to be involved in regulating the body's daily rhythm?
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· THE QUESTION Traveling between time zones or working odd hours can wreak havoc on sleep. So, too, can certain medications or health problems. Might this be ameliorated by supplements of the hormone melatonin -- thought to be involved in regulating the body's daily rhythm?