21 Mar 2019 Blackmores Institute Prenatal vitamin use reduces incidence of ASD 21 Mar 2019 Share Share on LinkedIn Share on Facebook Share on Twitter Share on Google+ Share on Pinterest News Mothers taking vitamin supplements during the first month of pregnancy may reduce Autism Spectrum Disorder recurrence in younger siblings of children with Autism Spectrum Disorder in high-risk families, a study in JAMA Psychiatry has found. × To continue reading this article, please Log In or Sign Up for access.