(HealthDay News) — There is no association between soy intake and endometrial cancer risk, according to a study published online in BJOG: An International Journal of Obstetrics & Gynaecology.
S. Budhathoki, from the National Cancer Center in Japan, and colleagues evaluated soy intake measured in a food frequency questionnaire (1995 to 1998) among 49,121 women (aged 45 to 74 years) also participating in a 5-year follow-up survey questionnaire.
RELATED: Gynecologic Cancers Resource Center
Continue Reading
The researchers found that over an average of 12.1 years of follow up, there were 112 newly diagnosed endometrial cancer cases. There was no association between energy-adjusted intakes of soy food and isoflavone and the risk of endometrial cancer.
For each 25 grams per day increase in the intake of soy food, the multivariate-adjusted hazard ratio was 1.02 (95% CI, 0.94 to 1.10), and the corresponding value for isoflavone intake per 15 mg per day was 1.01 (95% CI, 0.84 to 1.22).
“In this population-based prospective cohort study of Japanese women, we observed no evidence of a protective association between soy food or isoflavone intake and endometrial cancer risk,” the researchers wrote.
