Supplementation of the B vitamin folic acid in women before conception and during early pregnancy has been shown to reduce the occurrence of neural tube defects (NTDs) by at least 50-70%. This collective evidence has led to a number of activities around prevention of NTDs. In 1992, the U.S. Public Health Service recommended that women of childbearing age consume 400 micrograms of folic acid per day for the purpose of reducing their risk of having a pregnancy affected by an NTD. Subsequently, in 1996, the U.S. Food and Drug Administration made it optional to fortify enriched grain products with folic acid, and mandated fortification by 1998. Since 1995, the March of Dimes has commissioned Gallup to conduct surveys to measure women's awareness and behavior relative to folic acid and other pre-pregnancy health issues.
| ||Detailed data from March of Dimes folic acid surveys are only available for the United States. Quick facts for this information can be found here.|
| ||For more detailed data, click on the topic edit button in search tool on left side, select one of the Subtopics from drop down list under this topic. Here you'll find more graphs, maps, and tables that pertain to this topic.|
March of Dimes Folic Acid Surveys, conducted by Gallup.
Centers for Disease Control and Prevention, Pregnancy Risk Assessment Monitoring System.
Retrieved November 27, 2014, from www.marchofdimes.org/peristats.