Don’t sibling control studies indicate that the effect of alcohol exposure in the womb is mostly due to genetic confounding?https://twitter.com/KirkegaardEmil/status/1125752047452737537 …
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These use natural variation, but control for genetics using sibling comparisons. However, one can use animal studies, as has been done, and these produce similar evidence of causality. Even produce similar facial abnormalities. https://scholar.google.dk/scholar?hl=en&as_sdt=0%2C5&q=animal+%22fetal+alcohol+syndrome%22&btnG= …
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Let's look at it this like this: what do rates of drinking during pregnancy over time look like? What do rates of "FAS" symptoms look like over the same time period?
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