Study design. Subjects were classified as equol producers or non-producers and were further assigned to 2 groups as follows: ISO + control, intervention with soy isoflavone supplement and sucrose; ISO + FOS, intervention with soy isoflavone supplement and fructooligosaccharides. ISO, isoflavones; FOS, fructooligosaccharides.
Tousen et al. Nutrition Journal 2013 12:127 doi:10.1186/1475-2891-12-127