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Range of motion begins improving
[DOI] [PMC free article] [PubMed] [Google Scholar] Kirkham 2010 Kirkham JJ, Dwan KM, Altman DG, Gamble C, Dodd S, Smyth R, et al
That's just a technical way of saying it's a chain of 15 amino acids
Additionally, Vitamin B12 deficiency is more common among older adults
doi: 10.1038/nn.2491
