Causes of anemia are complex and our data do not allow us to directly identify those involved. However, our analysis points toward the existence of direct effects of heat on hemoglobin levels through the two main mechanisms the human body uses to cool itself: transpiration and vasodilation.
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This result is consistent with pre-existing results on children in Sub-saharan Africa, by Magalhães and Clements (2011) and Zhu et al. (2023).
Besides working on a different geographical context, we use more flexible functional forms, which allows us to show that the effect is not linear.
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