As dietary sources of vitamin D account for only 10% of circulating 25(OH)D levels ( Adams et al , 1982 ), it is not unexpected that the finding is bordered on significance.
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Prospective study of predictors of vitamin D status and survival in patients with colorectal cancer.
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We therefore explored the impact of each of these individual variables on mortality in our study cohort, and found that patients who reported higher total vitamin D intake showed a trend towards lower risk of death ( P trend=0.08).