A new study finds that some infants who die of SIDS have abnormalities in a particular brain receptor that may be involved in helping them gasp for air.
Sudden infant death syndrome, the unforeseen and unexplained death of a baby younger than one year old, is by definition a mystery. But researchers are getting closer to understanding some of the risk factors and mechanisms that contribute to SIDS.
was altered in some infants who died of SIDS. The receptor in question is part of the serotonin system, which plays an important role in regulating involuntary body functions like heart rate, breathing and blood pressure. “They arouse and they go through what’s called auto-resuscitation, where it kick-starts breathing,” she said.
“It’s almost, from a scientific standpoint, courageous to attempt to even try to make a conclusion,” Otero said. It’s likely that genetics also affects an infant’s vulnerability to SIDS, though scientists aren’t sure in what capacity, Weese-Mayer said.
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