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Calcium and vitamin D intakes may be positively associated with brain lesions in depressed and nondepressed elders. Payne ME, Anderson JJ, Steffens DC. Nutr Res. 2008 May;28(5):285-92. PMID: 19083421 doi: 10.1016/j.nutres.2008.02.013 In conclusion, calcium and vitamin D consumption were associated with brain lesions in elderly subjects even after controlling for potentially explanatory variables. These associations may be due to vascular calcification or other mechanism. The possibility of adverse effects of high intakes of calcium and vitamin D needs to be further explored in longitudinal studies of elderly subjects.

Vitamin D and mortality in older men and women. Pilz S, Dobnig H, Nijpels G, Heine RJ, Stehouwer CD, Snijder MB, van Dam RM, Dekker JM. Clin Endocrinol (Oxf). 2009 Nov;71(5):666-72. Epub 2009 Feb 18. PMID: 19226272 DOI: 10.1111/j.1365-2265.2009.03548.x Conclusions Low 25(OH)D levels are associated with all-cause mortality and even more pronounced with cardiovascular mortality, but it remains unclear whether vitamin D deficiency is a cause or a consequence of a poor health status. Therefore, intervention studies are warranted to evaluate whether vitamin D supplementation reduces mortality and cardiovascular diseases.