Turner is a co-editor of "Risks and chanllenges in Medical Tourism: Understanding the Global Market for Health Services" and "The View from Here: Bioethics and the Social Services". He is the author of numerous publications examining ethical and social issues related to transnational medical travel and globalization of health care. Turner's current research addresses ethical, legal and regulatory concerns associated with U.S. and international clinics marketing unproven and unlicensed cell-based interventions. In particular, he is investingating the global proliferation of clinics marketing "stem cell treatments" for amyotrophic lateral sclerosis, Parkinson disease, multiple sclerosis and many other diseases.