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 1:36 Arizona Senate repeals 1864 abortion ban 2:15 Heavily-camouflaged minors charged after ‘assassins' game at Old Lyme school 2:40 7th grader brought gun to school in Hartford: police 1:40 Democrats say Big Oil misled public for decades about climate change 1:36 A student brought a gun to middle school in Hartford: police