Is Sugar-Sweetened Beverage Consumption a Possible Confounder in the Inverse Association Between Coffee and Kidney Disease?

We read with great interest the article by Hu et al,1 who observed a protective effect of coffee consumption on incident kidney disease. As evidenced by the authors, a limitation of the study is the lack of knowledge about a possible correlation between coffee consumption and the intake of other beverages. In average dietary habits, coffee consumption could be an alternative to the intake of potentially harmful beverages (eg, sugar-sweetened beverages that have been positively associated with kidney disease risk2).

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