Background. The Institute of Medicine has recommended basic clinical c
ompetence in environmental medicine (EM) for all physicians. However,
the amount and content of instruction in EM currently offered in U.S.
medical schools is unknown. Method. This cross-sectional study was bas
ed on responses to a questionnaire regarding the EM curriculum content
of U.S. medical schools, mailed in June 1994 with the Association of
American Medical Colleges curriculum survey. Results. Of the 126 schoo
ls, 119 (94%) responded. Of these, 29 (24%) reported no required EM co
ntent in the curriculum. Schools with EM content averaged seven hours
of instruction. Eighty one schools (68%) had faculty with environmenta
l and occupational medicine expertise, primarily within the department
s of medicine, preventive medicine, and family medicine. Conclusion. T
here is a need for increased instruction in EM in medical school curri
cula for students to acquire the knowledge and skills to prevent, diag
nose, and treat health problems with an environmental exposure compone
nt. For those schools without EM content in the cur curriculum, the ne
cessary expertise to develop EM curriculum may be available in current
faculty.