Dietary soy isoflavone intake in older Japanese American women

Abstract

Objective: In a sample of older Japanese American women, we aimed to: (1) describe the most commonly consumed soy foods, (2) estimate dietary soy isoflavone intake, (3) describe characteristics associated with dietary soy isoflavone intake, and (4) compare our estimates with previously published estimates in other Japanese samples. Design: A 14-item soy food-frequency questionnaire was administered to older Japanese American women and responses were converted to quantitative estimates of soy isoflavones (genistein plus daidzein). Multiple regression was used to examine characteristics associated with dietary soy isoflavone intake, including self-reported lifestyle and cultural factors and dietary intake of various foods ascertained from a semi-quantitative food-frequency questionnaire. To compare our estimates with other samples, a review of the literature was conducted. Setting/subjects: Data are from 274 women aged 65+ years, recruited from a longitudinal cohort study of Japanese Americans in King County, Washington State. Results: The soy foods most commonly consumed were tofu (soybean curd), miso (fermented soybean paste) and aburaage (fried thin soybean curd). The mean intake of dietary soy isoflavones was 10.2 (standard deviation (SD), 12.4) mg day 21, approximately a quarter to a half that of previously published estimates in Japanese samples. Dietary soy isoflavone intake was positively associated with speaking Japanese, the consumption of traditional Japanese dishes (kamaboko, manju and mochi), low-fat/non-fat milk and yellow/red vegetables, vitamin E supplement use, and walking several blocks each day. Dietary soy isoflavone intake was negatively associated with the consumption of butter. Conclusions: The estimated dietary soy isoflavone intake in Japanese American women living in King County, Washington State was about a quarter to a half that of women living in Japan. Dietary soy isoflavone intake was associated with speaking Japanese and healthy lifestyle and dietary habits.

Dietary intakes and food sources of phytoestrogens in the European Prospective Investigation into Cancer and Nutrition (EPIC) 24-hour dietary recall cohort

“…However, the dietary habits of Asian immigrant populations living in America and Europe are becomimg more westernized and this may explain a twofold decrease in isoflavone intake observed in Japanese Brazilians 46 and a fourfold decrease in intake observed in Japanese women living in the US. 49 Lignans were the most abundant contributor of phytoestrogens in those with low phytoestrogen intakes, and the second highest contributor in those with a high intake, such as the UK centres. MED countries had a low lignan intake (1.02 mg/day), but higher than that reported in an Italian study (0.67 mg/day).…”

Participants' willingness to consume soy foods for lowering cholesterol and receive counselling on cardiovascular disease by nutrition professionals

“…We recruited people both with and without heart disease because we were interested in people's willingness to consume soy for both primary prevention and secondary care. The NCEP Step III recognises total cholesterol levels greater than 200 mg dl 21 as appropriate for follow-up 3 . We found participants were much more likely to know their total cholesterol rather than their LDL cholesterol level; therefore total cholesterol .…”

“…We found participants were much more likely to know their total cholesterol rather than their LDL cholesterol level; therefore total cholesterol . 200 mg dl 21 was used as the cut-off for heart disease. Forty-two per cent of the participants self-reported having heart disease or high cholesterol.…”

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Consumo alimentar e fatores dietéticos envolvidos no processo saúde e doença de Nikkeis: revisão sistemática

“…With regards to the studies' designs, ten were cohort studies, 16,[18][19][20]23,25,[42][43][44]46 one was of a case control, 47 and three 14,[35][36] were cross sectional.…”