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Association of vitamin D and vitamin B12 with cognitive impairment in elderly aged 80 years or older: A cross-sectional study

Journal of Human Nutrition and Dietetics Mar 06, 2019

da Rosa MI, et al. - In this study involving 165 elderly individuals, researchers evaluated the correlation of vitamin D and vitamin B12 with cognitive impairment. Data were obtained from a cross-sectional study involving individuals aged ≥ 80 years living in urban and rural areas of the cities of Siderópolis and Treviso, Santa Catarina, Brazil. They noted that the prevalence of cognitive decline was 35.2%. Furthermore, investigators found that elderly individuals with vitamin D levels of ≤ 18 ng mL−1 had a higher prevalence of cognitive decline even after adjustment for potential confounders. Vitamin B12 levels of ≥ 496 pg mL−1 were also a risk factor for cognitive decline in this population.

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