OBJECTIVE: To evaluate the evidence that carotene-rich fruits and vegetables can overcome vitamin A deficiency.DESIGN: Results of studies on the relationship between dietary carotenoids and vitamin A deficiency were evaluated…
Background: Methylation of DNA, which may have a role in the regulation of gene expression, depends on dietary folate and methionine. Because aberrant DNA methylation may contribute to the initiation…
It was proposed in 1980 that vitamin D and calcium could reduce the risk of colon cancer. This assertion was based on the decreasing gradient of mortality rates from north…
Background: In several epidemiologic investigations, folate intake has appeared to reduce the elevated risk of breast cancer associated with moderate alcohol consumption. However, data relating plasma folate levels to breast…