Intake of okara soup for 2 weeks for breakfast improved defecation habits in young Japanese women with self-reported constipation: A randomized, double-blind, placebo-controlled, intervention study.

Okara is a byproduct of soymilk manufacturing and a rich source of protein and dietary fiber. We investigated whether okara intake improves the habit of defecation in young Japanese women (n = 52) with self-reported constipation. Subjects were categorized into placebo and test groups, who ingested soymilk (0.