According to a recent analysis of international studies, "Circulating Carotenoids and Risk of Breast Cancer: Pooled Analysis of Eight Prospective Studies," women whose diet include high carotenoid intake have a greatly reduced breast cancer risk.
An analysis of eight international studies were pooled by medical researchers and statisticians at the Brigham and Women’s Hospital and Harvard Medical School. Their study was reported to the Journal of the National Cancer Institute in October of 2012.
Eight international studies of carotenoid blood levels totalling over 7,000 women were pooled. Slightly over 3,000 were breast cancer case studies and the other nearly 4,000 were control subjects. They were statistically adjusted to assorted variables.
Significantly high inverse associations were observed with high circulating carotenoid blood levels of alpha and beta carotene, lycopene, lutein and zeaxanthin. These can all be found in fresh, organic fruits and vegetables listed later in this article.