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However, the molecular mechanism by which CMs get into the intestinal lymphatics is unknown. Here, we demonstrated that GPR182, an atypical chemokine receptor in lymphatic endothelial cells, mediates dietary fat absorption. GPR182-KO mice exhibited a selective increase in circulating high-density lipoproteins and are resistant to diet-induced obesity. GPR182 ablation in mice led to poor lipid absorption and thereby a delay in growth during development. GPR182 broadly interacted with and transported lipoproteins. Transmission electron microscopy analysis revealed that, mechanistically, loss of GPR182 prevented CMs from entering the lacteal lumen of the small intestine. Consistent with this, GPR182 blockade with mAbs protected mice from diet-induced obesity and treated existing obesity. 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