Group annotations on this page
nightsurfer on 2009-12-13Serum 25(OH)-vitamin D concentration and risk of esophageal squamous dysplasia.
Abnet CC, Chen W, Dawsey SM, Wei WQ, Roth MJ, Liu B, Lu N, Taylor PR, Qiao YL.
Cancer Epidemiol Biomarkers Prev. 2007 Sep;16(9):1889-93.
Background: Squamous dysplasia is the precursor lesion for esophageal squamous cell carcinoma, and nutritional factors play an important role in the etiology of this cancer. Previous studies using a variety of measures for vitamin D exposure have reached different conclusions about the association between vitamin D and the risk of developing esophageal cancer.
Conclusions: Higher serum 25(OH)D concentrations were associated with significantly increased risk of squamous dysplasia. No obvious source of measured or unmeasured confounding explains this finding.
In conclusion, we found that a higher serum 25(OH)D concentration was associated with an increased risk of esophageal squamous dysplasia, the precursor lesion for ESCC. This finding concurs with our previous prospective study which found that higher vitamin D status was associated with increased risk of incident ESCC in this same population. These unexpected findings suggest that further studies of the association of vitamin D and digestive tract cancers are needed before the effect of vitamin D in different populations can be elucidated.