Many social gradients in health appear steeper for men than for women. I refer to this as the “Steepness Puzzle.” This paper explores the ethical implications of this Puzzle. First, it identifies potential explanations for the Steepness Puzzle, including methodological problems. Second, it highlights two harms associated with the methodological explanation: the consequences of biased epistemic practices and the marginalization of women. It also demonstrates how attempts to flatten the gradients in health could disproportionately favor men or reinforce troubling gendered (...) norms. Finally, I suggest ways to address the methodological problems underlying the Puzzle. (shrink)