Women of childbearing age are advised to take folic acid supplements (400 micrograms per day) continued to the 12th week of pregnancy, to reduce the risk of the baby being born with a neural tube defect (such as spina bifida). Further effects of folic acid on neurodevelopment after birth had not yet been investigated. This study looked at severe language delay at 3 years of age, using the Norwegian Mother and Child Cohort Study.
