Maternal Periconceptional Folic Acid Intake and Risk of Autism Spectrum Disorders and Developmental Delay in the CHARGE (CHildhood Autism Risks from Genetics and Environment) Case-control Study.

Source: 
American Journal of Clinical Nutrition
Date Published: 
May 30, 2012
Abstract: 

Maternal periconceptional folic acid intake may reduce ASD risk in those with inefficient folate metabolism