date:Aug 06, 2012
validated food-frequency questionnaires.
During a mean follow-up of 7.4 years, a total of 1,171 deaths were identified with 881 from breast cancer and 1348 from recurrences.
Soy isoflavone consumption was found inversely associated with recurrence among both US and Chinese patients, regardless of whether data were analyzed separately by country or combined.
An analysis of combined data showed eating10 or more mg of soy isoflavones per day was associated with a 13 percent reduced risk of al