In this meta-analysis which included data gathered from 22 case-control studies, involving a total of 10,073 subjects, which investigated an association between vitamin or antioxidant intake (or serum level) and cervical neoplasm risk, results found that intakes of vitamin B12 (OR=0.35), vitamin C (OR=0.67), vitamin E (OR=0.56), and beta-carotene (OR=0.68) were found to be associated with a significantly reduced odds ratio of cervical neoplasm. The authors state, "The findings of this meta-analysis indicate that overall, there were preventive effects of vitamin or antioxidant intake on cervical neoplasms in case-control studies."
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