Category: SIDS

Low Levels of Serotonin a Cause of Sudden Infant Death Syndrome?

Sudden Infant Death Syndrome (SIDS) is the third leading cause of infant death with over 2000 lives being taken every year. 

A new study funded by the NIH through the National Institute of Child Health and Human Development (NICHD) found that serotonin levels were 26 percent lower in tissue from infants who died of SIDS than in tissue from the group of infants who died unexpectedly in ways unrelated to SIDS. Serotonin is a brain chemical that plays a vital role in regulating breathing, heart rate, and sleep.  The study also measured tryptophan hydroxylase, an enzyme needed to make serotonin, and found that these enzyme levels were 22 percent lower.

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