Cruciferous vegetables, genetics and breast cancer risk.

Turnip and Chinese cabbage in the diet was associated with a significantly lower postmenopausal breast cancer risk.
Women with the genotype in question and a diet low in cruciferous vegetable intake had an increased breast cancer risk and this was seen mostly among premenopausal women.

Cruciferous vegetables, the GSTP1 Ile105Val genetic polymorphism, and breast cancer risk.
Am J Clin Nutr. 2008 Mar;87(3):753-60.