The Importance of Vitamin B12 - NewsGrabs Thursday 5 March 2009 Categories NewsGrabs Low levels of vitamin B12 may increase risk for neural tube defects Children born to women who have low blood levels of vitamin B12 shortly before and after conception may have an increased risk of a neural tube defect, according to an analysis by researchers at the National Institutes of Health, Trinity College Dublin, and the Health Research Board of Ireland. Women with the lowest B12 levels had 5 tim