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More recent meta-analyses of prospective cohort studies in older adults have not found a relationship between blood cobalamin concentration or dietary vitamin B 12 intake and cognitive decline or dementia (80, 81)
According to a study published in PubMed Central (National Institutes of Health), intravenous administration of vitamin B12 provides a faster increase in B12 levels compared to oral supplementation, making it a potentially better option for patients with severe deficiency
Alterations of bone biomechanical properties can contribute to osteoporosis and increase the risk of fractures in the elderly
High stress, infections, antacids, and other medications deplete intrinsic factors
Good dietary sources of these nutrients include poultry, eggs, salmon, oysters and tahini
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