Influence of 10 wk of soy consumption on plasma concentrations and excretion of isoflavonoids and on gut microflora metabolism in healthy adults

Wiseman, H., Casey, K., Bowey, E. A., Duffy, R., Davies, M., Rowland, I. R., Lloyd, A. S., Murray, A., Thompson, R. and Clarke, D. B. (2004) Influence of 10 wk of soy consumption on plasma concentrations and excretion of isoflavonoids and on gut microflora metabolism in healthy adults. American Journal of Clinical Nutrition, 80 (3). pp. 692-699. ISSN 0002-9165

Abstract/Summary

Although interindividual variation in isoflavone metabolism was high, intraindividual variation was low. Only concentrations of O-DMA in plasma and urine appeared to be influenced by sex. Chronic soy consumption does not appear to induce many significant changes to the gut metabolism of isoflavones other than higher beta-glucosidase activity.