Gosh I put all this up here recently Erica but can find where it is now but no worries I can do it again.I've read a few books and lots of online stuff about nutrition and cancer. It's hard to know what to take seriously and what is nonsense. But one book in particular had a lot of detailed information about various nutrients that are supposedly good and bad for BC. It was called The Whole Food guide for Breast Cancer Survivors by Edward Bauman and Helayne Waldman. There seemed to be lots of research cited in the bibliography to back up their claims.Probably the most well founded one is vitamin D, then fish oil is supposed to be good. I also take calcium and a hair/skin/nails pill, neither of which are specifically anti-cancer. The one that is a bit unusual is a produt called Breast Balance that I've ordered online from the US. It's main ingredient is diindolymethane which is a derivative of crucifierous vegatables like broccoli. It is thought to help minimise excess estrogen in the body. (so only of use if you're estrogen +ve). There is a study underway at the University of Arizona into whether taking this product with tamoxifen works better than tamoxifen alone. (I am taking tamoxifen too).The other nutrients in Breast Balance are selenium and iodine, both of which are often deficient in women with breast cancer accoding to the Bauman/Waldman book. I have also stopped taking multi-vitamins that have iron and copper in them which the book says are risky in high doses for breast cancer survivors. (Especially if like me, treatment has put you into early menopause.)Having said all that, my impression from all that I've read, is that the best thing you can do is eat lots of vegetables, avoid alcohol and processed food. Green tea, carrots, apples, pomegranates, olive oil, broccoli and all leafy greens, walnuts are some of the foods repeatedly mentioned as possibly having a cancer preventative role. I've also read that Vit C might help and priobiotics too. There's so much to consider!