No, but this one is surely causal. Tons of strong indirect evidence. No need to follow Fisher. http://aje.oxfordjournals.org/content/133/5/416 …
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Anyway, my main point was that the case for diet and lifestyle affecting health is lacking *good* evidence. In the case...
These interventions don't work because people can't easily change their habits, not because the habits aren't causal.
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...of smoking I'm not saying there is not a causal relationship, but *good* evidence for such is lacking.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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In the case of lifestyle, probably not. If it were, twin control results would be stronger and effect would persist when...
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...you controlled for IQ, which it doesn't.
End of conversation
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