More than 2.1 billion adults are estimated to be overweight or obese worldwide. This PrimeView focuses on factors that increase the risk of becoming overweight or obese, including a reduction in energy expenditure, excess energy intake, genetics, and social and cultural factors.

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Obesity. Nat Rev Dis Primers 3, 17035 (2017). https://doi.org/10.1038/nrdp.2017.35

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