BACKGROUND: Low vitamin B₁₂ concentrations have been associated with higher risks of cognitive impairment, but whether these associations are causal is uncertain. The associations of cognitive impairment with combinations of vitamin B₁₂, holotranscobalamin, methylmalonic acid, and total homocysteine, and with the vitamin B₁₂ transport proteins transcobalamin and haptocorrin, have not been previously studied. METHODS: We performed a population-based cross-sectional study of 839 people 75 years...Expand abstract
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Association of cognitive impairment with combinations of vitamin B₁₂-related parameters.
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