Whether obesity is a cause of type 2 diabetes mellitus and coronary heart disease or a shared risk factor has been an enduring subject of debate. Lyall and colleagues have used Mendelian randomization to conclude that there is a causal relationship between obesity and cardiometabolic disease. However, the analyses fail key inherent assumptions. The article does not negate a large body of data indicating that insulin resistance is the primary mechanism driving the progression of cardiometabolic disease.
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Acknowledgements
The authors acknowledge support from the NIH for the UAB Diabetes Research Center (DK-079626) and Mentored Research Scientist Career Development Award (to SA; K01 HL136700), and the American Heart Association for the Strategically Focused Obesity Research Center (17SFRN33610070),
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Aslibekyan, S., Garvey, W. Obesity and cardiometabolic disease — more than meets the eye. Nat Rev Endocrinol 13, 566–568 (2017). https://doi.org/10.1038/nrendo.2017.112
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DOI: https://doi.org/10.1038/nrendo.2017.112