February 13, 2013 10:00 am Folic Acid: Autism Preventative Doctors now advise pregnant women to take 400 micrograms of folic acid every day. A new study says folic acid supplements taken early in pregnancy may reduce Autism risk by 40%. NBC’s Erika Edwards reports. US & World Videos 2:52 Severe weather kills at least 5 as tornadoes rip through Midwest and South 0:48 World Central Kitchen to resume operations in Gaza 8:39 Gina Rodriguez gushes 0ver motherhood with son Charlie 2:22 Scarlett Johansson and Colin Jost have date night at White House Correspondents' dinner 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner