A comparative study of the intestinal flora of untreated postmenopausal breast cancer patients and healthy postmenopausal individuals and a preliminary study of soymilk beverage acceptability in a group of breast cancer patients

Interventions: with soymilk without soymilk Primary outcome(s): 1) Acceptability of soymilk in Japanese breast cancer patients 2) Composition of intestinal flora between patients who drink the soymilk and who do not drink Study Design: Parallel Randomized