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The Japanese who consume some products to regularly basis of soy would run less risk to be reached of a breast cancer that the other. It is the conclusion of the National Center of the cancer of Tokyo that led more by a survey of 24 000 Japanese aged of 40 years to 69 years.

The researchers analyzed the food of the participants as well as their rate of genistein in blood, the most abundant in the soy isoflavone. According to the results, the women who had the most elevated rate genistein had 65% less risk to suffer from a breast cancer that those that had a weak rate.

The participants filled a food questionnaire in which they had to retail, among others, their consumption of products to basis of soy: miso soup, seeds, tofu, natto (dish of fermented soy beans).

The women who presented the highest rates of blood genistein consumed 100 grams of tofu per day on average, illustrate the researchers.

However, a too strong consumption of soy, as supplements for example, can increase the risks of breast cancer on the contrary, add the authors of the survey.

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