Women who have already experienced an NTD-affected pregnancy are advised to take a 5 mg folic acid supplement daily (Scientific Advisory
Committee on Nutrition (SACN), 2013) and it has been suggested that obese women should also take a 5 mg dose of folic acid daily from
before pregnancy until the first trimester (Centre for Maternal and Child Enquiries (CMACE) and Royal College of Obstetricians and Gynaecologists
(RCOG), 2010). This is to help minimise the risk