‘Mendelian randomization’: can genetic epidemiology contribute to understanding environmental determinants of disease?*

Abstract excerpt

Associations between modifiable exposures and disease seen in observational epidemiology are sometimes confounded and thus misleading, despite our best efforts to improve the design and analysis of studies. Mendelian randomization—the random assortment of genes from parents to offspring that occurs during gamete formation and conception—provides one method for assessing the causal nature of some environmental...

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