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Furthermore, although the analyses were adjusted for some confounding factors, the effect of other potential confounders could not be ruled out

If you are at all concerned with your use of vitamin B12, be sure to speak to your doctor

[DOI] [PubMed] [Google Scholar] 309.Capelletti S., Garca Soto S.C., Gonalves M.A.F.V

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Those most at risk include vegans and vegetarians, people with digestive conditions such as Crohn's disease, coeliac disease or IBS, those taking long-term metformin or proton pump inhibitors, older adults whose ability to absorb B12 through the gut declines naturally with age, those with pernicious anaemia, and anyone with a history of chronic alcohol use