HUBERMAN: Now, for any of you that have lived in a part of the world in which it's very, very dark with very short days in the winter and longer days and a lot of sunlight during the summer, you're probably familiar with the fact that when the sun comes out, people start feeling better
Approximately 50% to 98% of the injected cyanocobalamin is in the urine
It promotes the outgrowth of fibroblasts and tenocytes, helping repair tendons and ligaments with greater structural integrity
10.1159/000093982 [DOI] [PubMed] [Google Scholar] Seven A., Civelek S., Inci E., Inci F., Korkut N., Burcak G
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Because B12 is mainly found in animal-based foods, supplementation may be especially relevant for people following plant-based or low-animal-product diets