What is this ingredient? Vitamin B12, here as methylcobalamin (a coenzyme form often called “protected coenzyme B12”), is a water‑soluble vitamin essential for one‑carbon metabolism and mitochondrial function. In its cofactor roles for methionine synthase and methylmalonyl‑CoA mutase, B12 supports DNA synthesis and repair, proper DNA methylation, and normal red blood cell formation and neurologic function [0,7]. Inadequate B12 can disturb one‑carbon metabolism, elevate homocysteine, and compromise genomic stability, which are processes relevant to many tissues, including hormonally sensitive ones.
Large epidemiologic studies and meta‑analyses examining one‑carbon nutrients (folate, B6, B2, B12) and breast cancer risk generally find that higher intakes of folate and some B vitamins are modestly associated with reduced risk, whereas vitamin B12 itself shows no clear independent association with breast cancer incidence—neither strongly protective nor harmful within usual intake ranges [0,4,7]. This positions B12 as a fundamental “enabling” nutrient, needed to keep one‑carbon metabolism running smoothly, rather than as a direct breast‑cancer risk modifier on its own.
Why include it in this formula? BREAST HEALTH - 60 combines vitamin C, vitamin D3, methylcobalamin (B12), folate, calcium, and a suite of polyphenols and carotenoids (green tea, indole‑3‑carbinol, broccoli extract, grape seed extract, curcumin phospholipid complex, lutein, lycopene, zeaxanthin). Together, these ingredients target antioxidant defense, estrogen‑related metabolism, and structural integrity in breast and surrounding tissues. Within this architecture, methylcobalamin is the core "one‑carbon and DNA‑maintenance" pillar. It works with folate and B6 (from diet or multivitamins) to support proper methylation, nucleotide synthesis, and homocysteine balance, which underpin healthy cell turnover and genomic stability [0,4,7].
Because several components in the formula (indole‑3‑carbinol, crucifer extracts, green tea, curcumin, carotenoids) act on hormone‑ and redox‑sensitive pathways, having adequate B12 ensures that the underlying DNA synthesis and repair machinery is well supplied, especially in rapidly renewing or hormonally responsive cells. Observational work suggests that high intakes of one‑carbon–related vitamins as a group may be associated with modestly reduced breast cancer risk or attenuated risk in genetically susceptible women [0,2,4,7], supporting the rationale for including methylcobalamin as part of a balanced, multi‑nutrient strategy for long‑term breast tissue wellness.
References
- [0] Association Between One‑carbon Metabolism‑related Vitamins and Risk of Breast Cancer: A Systematic Review and Meta‑analysis of Prospective Studies
- [2] MTHFR C677T and postmenopausal breast cancer risk by intakes of one‑carbon metabolism nutrients: a nested case‑control study
- [4] Folate and other one‑carbon metabolism‑related nutrients and risk of postmenopausal breast cancer in the Cancer Prevention Study II Nutrition Cohort
- [7] The Vitamins Involved in One‑Carbon Metabolisms are Associated with Reduced Risk of Breast Cancer in Overall and Subtypes