Effects of soy on her2 positive cancer?

[Becky]

Soy contains phytoestrogens and the jury is out whether it should or shouldn't be avoided if one has hormone positive cancer but I know there is nothing in the literature about Her2+ cancer. Saying that the Her2+ is also ER and PR negative.

I am PR neg but moderately ER+. Soy had never been a big part of my life but if I go to a Japanese restaurant, I may enjoy some edamame or a bowl of miso soup. Same with Chinese - I might have a dish that has some tofu in it. But both situations are rare (maybe once a month). I never enjoyed so don't drink soy milk. Since the opinions on soy for ER and PR positive women are all over the place, moderation but not necessarily total avoidance should be employed. Eating tofu everyday washed down with a couple of glasses of soy milk should be reconsidered but occassionally enjoying an order of Bean Curd Hunan style is absolutely okay for me.

[Barbara2]

Copied from another thread where I had posted this from an article I had read:
7. Steer clear of soy supplements. (For HORMONE+ breast cancer)

Soy contains isoflavones, which can act like estrogen in your body and potentially stimulate the growth of certain types of breast cancer, explains Dr. Seema A. Khan, a professor of surgery and co-leader of the breast cancer program at Northwestern University in Chicago. Supplements usually contain more concentrated doses of isoflavones, so experts recommend avoiding them. But soy foods _ edamame, soy milk, tofu _ are fine.

I am avoiding soy in supplements as much as possible. Foods...I'm careful, but it is in sooo many things.