Folic Acid may increase Breast Cancer growth.

folic acidPrevious studies involving the role of and have produced conflicting information with some studies showing that it protects against , others have suggested that taking high amounts of folic acid may increase the risk of developing . The level and amount of folic acid consumed in has increased dramatically in the past 15 years and women in particular are routinely advised to take as part of their post and prenatal care.

A new study, published in the journal , has confirmed that consumed by patients and survivors promotes the growth of existing .

“This is a critically important issue because patients and survivors in are exposed to high levels of folic acid through folic acid fortification in and widespread use of vitamin supplements after a diagnosis,” Dr. Kim lead author of the study said. “ patients and survivors in have a high prevalence of multivitamin and supplement use, with patients and survivors having the highest prevalence.”

The dose tested was 2.5 to five times the daily requirement.


Shaidah Deghan Manshadi, Lisa Ishiguro, Kyoung-Jin Sohn, Alan Medline, Richard Renlund, Ruth Croxford, Young-In Kim. Folic Acid Supplementation Promotes Mammary Tumor Progression in a Rat Model. , 2014; 9 (1): e84635 DOI: 10.1371/journal.pone.0084635

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