At first glance there does not seem to be anything philosophically problematic about human enhancement. Activities such as physical fitness routines, wearing eyeglasses, taking music lessons and prayer are routinely utilized for the goal of enhancing human capacities. This entry is not concerned with every activity and intervention that might improve people’s embodied lives. The focus of this entry is a cluster of debates in practical ethics that is conventionally labeled as “the ethics of human enhancement”. These debates include clinicians’ concerns about the limits of legitimate health care, parents’ worries about their reproductive and rearing obligations, and the efforts of competitive institutions like sports to combat cheating, as well as more general questions about distributive justice, science policy, and the public regulation of medical technologies.