The identical effects have been confirmed by experiments with worms, flies, mammals and primates. Better tested than harms of smoke
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besides who REALLY needs an excuse to drink? ;P
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once you control for worse health of abstainers and other basic statistical factors benefit disappears https://www.ncbi.nlm.nih.gov/pubmed/26997174
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no it hasn't - just doesn't fully account for protective effect. But still a clear bias
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also several other reasons to think protection over-estimated (tho not necessarily absent)
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Yep. Difficult to say exactly how much but the new guidelines reflect that uncertainty
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