Intriguing Sleep Apnea and Autism Connections
November 5, 2009
I stumbled across this blog post, where I discovered an interesting discussion on the possible link between the sudden rise of newly diagnosed autism cases and the onset of the "back to sleep" campaign in 1992. This is when the American Academy of Pediatrics recommended that all infants up to one year old be placed on their backs while sleeping. Due to this recommendation, the rate of SIDS (sudden infant death syndrome) dropped about 40% (from 1992 to 1999). During this same time period, the rate of infants placed on their backs increased from about 10% to almost 70%. Coincidentally, the rate of autism rose sharply as well.
The person proposing this association (Thomas McCabe) has made it clear that infants, by being placed on their backs, have less efficient sleep due to more frequent obstructions and arousals. He sites numerous studies and papers showing that stomach sleeping results in much lower arousals, shorter length of breathing pauses, and lower rates of body movements and sighs. Another study showed that infants sleeping on their stomachs slept 8.3% more than back sleepers.
He cites various other papers that report developmental and neurocognitive delays in back sleepers in the first 6 months compared with stomach sleepers. Furthermore, McCabe states that back sleeping interference with deep sleep (slow wave sleep – SWS) as well as REM sleep. Both are important for memory consolidation and cognitive function. What he’s suggesting is the possibly that all at-risk infants undergo some sort of screening EEGs and place those infants highest at-risk on CPAP.
It’s a little technical, but take a look at his posts, as well as his e-book. His ideas may sound radical, but worth considering, in light of the fact that now in certain parts of NJ, about 1% of all boys have autism or some variation.
It’s important to point out that SIDS peaks at around 2-4 months. Not too surprisingly, this is also the same timeframe when the baby’s voice box descends and separates aways from the soft palate, allowing the tongue to move further back into the throat. This is when they go from obligate nose breathers to oral and nose breathers. During this transitional state, the baby has to relearn how to swallow and breathe.
Based on what I’m discovering every day about our health and sleep-breathing problems, I would’t be surprised if this hypothesis turned out to be true. Of course, more definitive research must be done to prove this hypothesis. Unfortunately, the orthodox medical profession doesn’t like to admit it was wrong, so it won’t even consider asking if there’s any merit to this possible link.
Our infants have been sleeping on their stomachs for almost all of known history. Although it’s hard to argue with the SIDS data and the significant lowering of infant deaths, but there’s something unnatural about changing our natural sleep positions all of a sudden 17 years ago.
Even my youngest son Brennan naturally rolled over onto his stomach while sleeping as soon as he was able to.
Should the medical community at least take another look at this issue? Please reply with your comments below.