Parents who are having difficulty getting their babies to sleep through
the night may be somewhat relieved by a new study showing that a large
determinant of an infant's nighttime sleep is simply the luck of the
genetic draw.
Researchers in Canada studied sleep records from nearly 1,000 identical
and fraternal twins in Quebec, and found that genes largely determine
whether children sleep through the night. However, children's ability to
nap during the day is controlled more by their environment.
While some parents may find themselves fortunate in having a sound sleeper, the researchers said there are also ways to help a child along.
For the rest of the story: http://www.livescience.com/34696-genes-baby-sleep.html
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