Basic story - scientists looked at ~a lot~ of people (450,000) for a long time, and split them up depending on how many soft drinks they drankpic.twitter.com/MDv0AiTHEd
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Another hilarious thing about the study was that for some diseases, soft drinks were REALLY protective at low doses For example, drinking an extra Diet Coke a week REDUCED your risk of breast cancer by 21%
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Realistically, it's more likely that there are some significant confounders still remaining so we just don't know whether soft drinks = death/cancer from this study
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Also, for the epi nerds, the study authors attribute the reduction in risk at low doses to reverse confounding, but I find this argument unconvincing
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Firstly, they did a specific sensitivity analysis to try and control for reverse causality which didn't change the results, so their own results don't agree with this interpretation
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Secondly, this is absolutely a non-differential effect, so you'd expect it to apply equally across all groups of the study rather than only reducing the observed risk in one particular group of people
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End of conversation
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