According to the results of a recent study, the consumption of cruciferous vegetables might have a positive impact on survival in breast cancer patients. Cruciferous vegetables are members of the cabbage family; examples include–in addition to cabbage–broccoli, cauliflower, Brussels sprouts, kale, and bok choy.
The Shanghai Breast Cancer Survival Study, a large population-based prospective cohort study of Chinese breast cancer survivors, showed that eating cruciferous vegetables after a diagnosis of breast cancer was associated with improved survival in a population of Chinese women. The results were presented recently at the American Association for Cancer Research Annual Meeting.
The researchers found that after adjustment for confounders such as demographics, clinical characteristics, and lifestyle factors, cruciferous vegetable intake during the first 36 months after diagnosis was associated with a reduced risk for total mortality, breast-cancer-specific mortality, and recurrence. Across increasing quartiles of cruciferous vegetable consumption, the risk for total mortality decreased by 27% (to 62%), the risk for breast-cancer-specific mortality decreased by 22% (to 62%), and the risk for recurrence decreased by 21% (to 35%).
However, researchers cautioned that differences in the populations need to be taken into account when trying to extrapolate these results to other settings. Commonly consumed cruciferous vegetables in China include turnip, Chinese cabbage/bok choy, and greens, whereas broccoli and brussels sprouts are the most commonly consumed cruciferous vegetables in the United States and other Western countries. Also, the intake of these vegetables is much higher among Chinese women than that of American women.
The researchers suggest that breast cancer survivors in the United States follow the general nutrition guidelines of eating vegetables daily, and consider increasing their intake of cruciferous vegetables, such as cabbage, cauliflower, and broccoli, as part of a healthy diet.
Click here to read the study press release.