The volume of nipple aspirate fluid is not affected by 6 months of treatment with soy foods in premenopausal women.
Maskarinec G, Morimoto Y, Conroy SM, Pagano IS, Franke AA. The volume of nipple aspirate fluid is not affected by 6 months of treatment with soy foods in premenopausal women. J Nutr. 2011 Apr 01; 141(4):626-30.