Increased coffee and caffeine consumption tied to lower risk of kidney stones: Study
Sweden: Coffee and caffeine intake may prevent kidney stone disease, according to results from a Mendelian randomization study based on genetic data from 2 large studies. This study was conducted by Shuai Yuan and Susanna C. Larsson from Sweden, the findings of whose work were published in the American Journal of Kidney Diseases on 21st October 2021.
In observational studies, coffee and caffeine consumption were linked to a decreased incidence of kidney stones. As a result, this study used Mendelian randomization to determine the causative nature of these correlations.
For this study independent genetic variants related to coffee and caffeine consumption at the genome-wide significance level were chosen as instrumental variables for this investigation from previously published meta-analyses. The UK Biobank project (6,536 cases and 388,508 noncases) and the FinnGen collaboration provided summary-level data for kidney stones (3,856 cases and 172,757 noncases). Participants were subjected to coffee and caffeine intake that was genetically predicted. The existence of Kidney stones affected the final result. To obtain causal estimates, Mendelian randomization methods were utilized. The fixed-effects meta-analysis methods were used to integrate the estimates from the two sources.
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