But there's another massive, glaring flaw that isn't touched on at all Reverse causality
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Maybe there are a million factors you can never measure, and never control for, and thus it's really hard to know if this is causal or not Maybe
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So the authors are cautious. They know that there's a decent chance that the heat of your tea has nothing to do with risk of esophageal cancer But the newspaper needs a story And so we get "hot tea causes cancer"pic.twitter.com/g6kancVrKs
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So, let's recap: Large epi study showed 0.34% absolute increase in risk of cancer associated with drinking the hottest tea compared to cold tea, in large amounts, every day for 10 years Reverse causality and residual confounding remain an issue
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Do we trust these results? Well, yes. The study was interesting, and well done Do we think hot tea = cancer?
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End of conversation
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