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Ductal Carcinoma in Situ and Soy

  • Q: Can I eat soy after ductal carcinoma in situ (DCIS)?

    LP, June, 2017

    A: The issue of soy still poses many questions. For any breast cancer diagnosis, it is important that patients eat a balanced diet. This includes fruits, vegetables, whole grains, healthy fats, and lean or plant-based proteins. Specifically, for breast cancer, sometimes manufactured soy products, like protein powders or isolated soy protein/soy protein isolate found in nutrition bars or veggie burgers may be of concern, as we do not yet fully understand their role in producing an estrogen-like effect in the body. It is important to clarify that whole soy foods, such as edamame, tofu, and miso can be consumed safely and are excellent sources of protein, fiber, and other nutrients.

    This article has a lot more information on soy intake in someone who has had DCIS.

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