Western diet turns on fat genes

A diet high in fat and sugar has a double-whammy effect on the waistline, because it switches on genes that cause fat to be stored, according to new research. This study of mice found that foods that are high in fat and sugar stimulate the kappa opioid receptor, which plays a key role in fat metabolism. When this receptor is stimulated, it causes far more fat storage than would otherwise have occu ...

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