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intriguing...but how could autism cause prematurity? i would think it would be whatever factor triggering the autism that would be also causing the prematurity, so that autism and prematurity are correlationals that share a common cause.
Could be. I mean, there's (probably) a positive autism/prematurity correlation, but that doesn't mean that prematurity causes autism. Correlation doesn't mean a cause... But we knew that already.
Autism causing prematurity... Whatever genetic difference causes autism could also have some effect that causes prematurity. (I guess that'd be a common cause.) Or some hormonal or immunological aspect of autism could make prematurity more likely... the baby's brain starts signaling hormones before birth, and so does the placenta.
Don't think we'll actually figure out cause/effect until there's a genetic test for autism (something I hope never happens, even though it would be wonderfully interesting, because there'd be all this eugenic abortion going on... uuuhh... can of worms, yeah.) and maybe not then... Unless there's some obvious difference between autistic and non-autistic babies and their placentas or amniotic fluid that you could detect... maybe some tendency to stop progesterone production too soon or something...