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Er-, Er+
I found the article very interesting. One thought I have in regard to the "critical" importance of childhood soy consumption is sort of a chicken/egg question; what is it that causes us to have either ER positivity or ER negativity in tumors? Does the soy consumption early in life favor one vs the other? If it does, then the lifelong soy consumption by the Japanese with a resulting lower rate of bc makes more sense to me, in that any ER- cancer cells that might occur would be continuously dealt with early by the soy.
Beyond that question, I go back to the question of "if one is not eating as much meat, then what IS one eating?" In other words, if there is something critically important about childhood phytoestrogen consumption, is it not so much that they are getting the phytoestrogens, but what they are NOT getting by not eating as much animal products in the diet (not to mention the latter-day antibiotics and growth hormones that can be included if one eats animal products).
A.A.
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