"...modern human males do not adopt a fitness-enhancing strategy of widespread spermdonation because our reproductive strategies are designed for Pleistocene conditions. And the fitness-decreasing obesity brought about by an overindulgence in sugar-rich foods in technologically advanced countries may be explained by the fact that our sweet tooth, which was adaptive in the nutritional challenges posed by the Pleistocene, has since been rendered maladaptive in such countries by the mass availability of refined sugar."
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