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The body can only absorb up to 5-10 mg at any given time
Your nutrition regulates keratin production, so improving your diet with foods that benefit keratin may help keep your hair healthy
Biochemistry 43:1510315110 Sancar GB, Smith FW (1989) Interactions between yeast photolyase and nucleotide excision repair proteins in Saccharomyces cerevisiae and Escherichia coli
Last updated: March 9, 2026 If you are considering B12 injections this spring whether as part of a pre-summer wellness refresh or to address persistent fatigue understanding the risks is just as important as knowing the benefits
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