The Relationship between Arsenic and Folate in Nutrition

See http://www.ncbi.nlm.nih.gov/pubmed/18522624 for information.
The panel discussion at the 2005: Environmental Epigenomics, Imprinting and Disease Susceptibility Conference available on video touched on this. Note that some of the remarks by the panel are merely intended to be humorous. The videos of all conference presentations as well as links to those for six other conferences are at http://www.geneimprint.com/site/meetings/2005-durham.
Food is now grown in areas in the U.S. like cotton fields, etc., that were formerly treated with arsenic. Water supplies contaminated with arsenic are a problem in many areas of the world.