Effects of a high-beef diet on bowel flora: a preliminary report

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Abstract
Our laboratory has undertaken a study to determine whether the quantitative and/or qualitative bowel flora of man could be perceived as changing as a function of a controlled, systematic dietary sequence which included a high-beef regimen. The microbiological flora from each diet regimen was analyzed by both facultative and anaerobic studies performed on fecal specimens in order to test whether known carcinogen-producing species increased as a function of a high-beef protein diet. Initial untested data show that under the meatless diet coliforms rose in number. A subsequent high-beef diet caused elevated Bacteroides populations which persisted in a subsequent normal diet regimen.