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a surrogate marker of vascular health) in response to homocysteine reduction revealed that B-vitamin supplementation was accompanied by improved FMD in short-term ( 10.5 g/day) and breast cancer compared to the lowest quintile (4.3 g/day

PMID: 42327235 bioRxiv Engineered Lactate Catabolizing Probiotics Reveal Timescale Dependent Microbiome-Host Metabolic Coupling

Vitamin B12 then joins with a protein known as the intrinsic factor to be absorbed farther down in the small intestine

Support for the Nervous System: Protects nerves and improves neurological function

Even your bodys ability to absorb the B12 vitamin is a factor