The aim of this study was to examine whether use of and trust in health, food, and nutrition information sources are associated with the belief that meat is a necessary dietary component. Over 700 South Australians participated in a questionnaire survey that included questions on frequency of use of and level of trust in information sources, vegetarian status, meat beliefs, and demography. It was found that information sources are associated with the belief that meat is necessary, since they accounted for over 40% of the variance for all respondents. The most important associations were: lack of use of unorthodox sources; trust in orthodox sources; trust in advertising and the mass media; and trust in and use of social sources. There were differences in which predictors were important, however, depending on the respondent's sex, age, and vegetarian status. The implications of these observed communities of interest for health promotion are discussed.