Cruciferous vegetables and breast cancer

Cruciferous vegetables are the group of  vegetables belonging to the family Brassicaceae, including cauliflower, cabbage, cress, bok choy, broccoli etc.
Breast cancer (malignant breast neoplasm) is a cancer that starts in the tissues of the breast either from the inner lining of milk ducts (Ductal carcinoma) or the lobules (Lobular carcinoma) that supply the ducts with milk. there is also rare cases that breast cancer starts in other areas of the breast.

Nutrients and chemical constituents
1. Carbohydrates
2. Sugars
3. Dietary fiber
4. Omega 3 fatty acid
5. Protein
6. Beta-carotene
7. Lutein and
8. Zeaxanthin
9. Thiamine (Vitamin B1)
10. Riboflavin (Vitamin B2)
11. Niacin (Vitamin B3)
12. Pantothenic acid (B5)
13. Vitamin B6
14. Folate (Vit. B9)
15. Vitamin C
16. Calcium
17. Tryptophan
18. Iron
19. Magnesium
20. Phosphorus
21.Potassium
22. Zinc
23. Etc.
Its chemical constutuents include  glucosinolates, dithiolthiones, indoles , glucoraphanin, s-methyl cysteine sulfoxide, isothiocyanates, indole-3-carbinol, etc..

The benefits
 In 2010, over 250,000 new cases of breast cancer were diagnosed in women in the U.S. alone and the risk of getting invasive breast cancer during life time of a women is 1/8. isothiocyanates, chemical compound derived from Cruciferous vegetables has shown to be effective in anti cell proliferation, apoptosis cancer cells. In the study of the cytotoxicity of human breast cancer MCF-7 and human mammary epithelium MCF-12A cell lines, the derived compound found in isothiocyanates exerted its anti breast cancer activity with benzyl isothiocyanate (BITC), beta-phenethyl isothiocyanate (PEITC), Sulforaphane and NITC inhibited the growth of human breast cancer cells and human mammary epithelium cells at concentrations similar to those of the chemotherapeutic drug daunomycin (DNM). Other study indicated that sources of ITCs of  isothiocyanates reduced the risk of  breast cancer risk in menopausal women, through the interaction of the detoxified function of glutathione S-transferases (GSTs). Unfortunately, Depletion of GSTP1 is associated to increased risk of certain cancers.

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The Side effects1. People who has over production of IgM immunoglobulins which makes blood thicken should talk to their doctor before taking high amount of broccoli.
2. Allergic reaction??
3. Etc.
References
(1) Dietary organic isothiocyanates are cytotoxic in human breast cancer MCF-7 and mammary epithelial MCF-12A cell lines by Tseng E, Scott-Ramsay EA, Morris ME.(PubMed)
(2) Breast cancer risk in premenopausal women is inversely associated with consumption of broccoli, a source of isothiocyanates, but is not modified by GST genotype by Ambrosone CB, McCann SE, Freudenheim JL, Marshall JR, Zhang Y, Shields PG.(PubMed)
(3) Cruciferous vegetables, the GSTP1 Ile105Val genetic polymorphism, and breast cancer risk by Lee SA, Fowke JH, Lu W, Ye C, Zheng Y, Cai Q, Gu K, Gao YT, Shu XO, Zheng W.(PubMed)