In both cohorts and all menopausal subgroups, median B12 concentrations were lower among cases than controls. We found no evidence for an association between folate, B6, and homocysteine and breast cancer. These results should stimulate further investigations of potentially modifiable risk factors, such as these B-vitamins, for prevention of breast cancer. These products are not intended to diagnose, treat, cure or prevent any disease. Everyone should have feelings of daily energy, concentration and an easygoing attitude.
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