Japanese religious history, especially the medieval period; Japanese Tantric Buddhism and the esotericisation of religious practice; Millenarian writings and prophecy; Kami-Buddhas associations
Christianity; recent developments in African Christianity; the socio-political role of religion in Africa Socio-political role of Christianity in Africa; Africa's new charismatic churches
Judaism in Hellenistic and Roman times; rabbinic literature; social history of Jews in late antiquity; American Jewish history and literature, Jewish identity, gender studies
Anthropology of religion, religious reform (Islam and Pentecostalism), transnational religious networks (Tabligh Jamaʻat), faith-based development, urban anthropology, popular culture, gender, youth, West Africa (the Gambia, Senegal and Nigeria)
Politics, governance, and civil society in sub-Saharan Africa; non-governmental organisations; faith and development; history of development processes and interventions; issues in international health and non-state actors in health delivery.
Popular religions in early modern China (16th-20th cc); Christianity in china (18th-20th cc); Opium and other narcotics (18th-20th cc); Manchu history (16th-20th cc)
Anthropology of mental health and psychiatry; anthropology of organisations and activism, international development, caste, Dalit rights, anthropology of Christianity, South Asian society and popular religion, environmental history and natural resources management.
Syriac-speaking Christianity, especially its earlier history and its emergence from the Aramaic-speaking environment of the Roman/Byzantine Near East; the development of the Syriac scripts and language; early contacts between Syriac Christians and Muslims; other religious minorities in the Middle East (Jews, Mandaeans, Gnostics); the present situation of the Middle East Christians; Syriac liturgy. In addition, Professor Healey has worked extensively in the early alphabet, Hebrew Bible, Nabataea and Palmyra.
African Christianity; mission history in colonial and post-colonial settings; the religious encounter of Christianity with African traditional religion; indigenous African Christian movements; Pentecostalism, transnationalism and religious globalisation