 A common distinction in the medical world is that between “treatment” and “enhancement”, where the general idea is that biomedical interventions that are designed to restore or sustain health count as treatments while those that go beyond restoring or sustaining health count as enhancements (entry:  human enhancement).  The discussion in the previous section about disability largely pertained to the treatment end of that spectrum (entry:  neuroethics).  Philosophical debates about medical genetics have also revolved around the enhancement end (Buchanan 2011).