 The attempt to protect research participants by appeal to the obligations clinicians have to promote the medical interests of their patients also seems to leave healthy volunteers unprotected. Alternatively, proponents might characterize this position in terms of clinicians’ obligations to others in general: clinicians should not perform procedures on others unless doing so promotes the individual’s clinical interests. This approach seems to preclude essentially all research with healthy volunteers. For example, many phase 1 studies are conducted in healthy volunteers to determine a safe dose of the drug under study. These studies, vital to drug development, are inconsistent with the principle that clinicians should expose individuals to risks only when doing so is consistent with their clinical interests. It follows that appeal to clinical equipoise alone cannot render clinical research consistent with the norms of clinical practice.