Studies estrogen metabolism and the extent of 2-hydroxylation and 16alpha-hydroxylation of estrogens in Caucasian and Oriental women. Mean fat intake per 1000 kilocalories; Mean fiber intake and fecal weights; Plasma estradiol and plasma estrone sulfate; Urinary excretion of estrogen metabolites; Ratio of catechol estrogen to 16alpha-hydroxylated estrogen.