Taking vitamins early in pregnancy may be key.

Share on Pinterest
Physicians recommend prenatal vitamins for a multifariousness of reasons. Getty Images

Prenatal vitamins may aid to lower the risk of autism in children, fifty-fifty for loftier-chance families.

In prior studies, the apply of prenatal vitamins, specifically folate (which is taken equally a dietary supplement known as folic acid), has been shown to significantly lower the risk of developing autism spectrum disorder (ASD).

At present, new research published February 27 in JAMA Psychiatry, claims that the benefits of prenatal vitamins besides extend to high-risk families too.

Families that have a child with autism are at high risk of having some other child with ASD.

These younger siblings are upwardly to 14 times more likely to have ASD when compared with the general population because of ASD's genetic heritability.

According to the new study, use of prenatal vitamins cut the risk of developing ASD in younger siblings of children with ASD by half.

"Show is edifice for an important role of gestational exposures, including diet, in relation to autism. Research from imaging and other studies of the encephalon prove that processes affected in autism occur during pregnancy. Studies have repeatedly shown that taking folic acrid supplements were associated with protection from autism in the full general population,"Rebecca J. Schmidt, PhD, assistant professor in the department of public health sciences and the MIND Constitute, UC Davis School of Medicine, and beginning author of the study told Healthline.

Schmidt and her team looked at a cohort of 241 families affected by ASD to see whether prenatal vitamin supplementation offered the same benefits in these loftier-risk families.

While they institute that virtually all mothers — 96 per centum — reported taking a prenatal vitamin, but about 1 third of them took them prior to pregnancy, as recommended.

Mothers who took the vitamins in the first calendar month of their pregnancy were half every bit likely to have a child diagnosed with ASD.

Mothers who took prenatal vitamins in the first month of pregnancy were besides more likely to have children with less severe autism symptoms and college cognitive scores.

These findings could have important public health implications for the prevention of ASD in future generations, every bit well equally helping to guide time to come nutritional advice for expecting mothers.

But, there's still more work to do.

"This is a small written report that needs to be replicated in a larger sample before true hazard reduction calculations and public health policy decisions can be made," Dr. Kristin Sohl, vice chair of the department of pediatrics at University of Missouri Health Care, and part of Autism Speaks Autism Handling Network, told Healthline.

Folic acid supplementation, while by and large recommended, has non been without criticism.

Enquiry presented by researchers from Johns Hopkins University caused a frenzy in 2016. They plant that moms with extremely high levels of folic acid and vitamin B-12 in their claret were linked to an increased autism risk of most 18 percent.

Could prenatal vitamins — the very matter mothers were taking to lower the risk of ASD in their children — really have a function in causing information technology?

Merely in extreme cases.

In their study, women with an increased take a chance of ASD had levels of folate or B-12 in their blood well in backlog of the cutoff recommended by the World Health Organisation.

Even the researchers behind those findings concluded that prenatal vitamin supplementation was all the same a good idea.

Despite the widespread use (and recommendation) of folate supplementation earlier and during pregnancy, the reasons why it appears to exist protective against ASD aren't well understood.

"In that location are many possibilities. Folate and other vitamins are important for many processes that are critical during development and take been implicated in autism. This includes things like epigenetics — specifically DNA methylation which is dynamic near the critical time implicated in our study and potentially of import for fetal programming, DNA synthesis and repair, mitochondrial functioning, oxidative stress, inflammation," said Schmidt.

Folate is known to assistance foreclose neural tube defects, including spina bifida and anencephaly. It also plays a prominent role in fetal and brain development.

"Because many pregnancies are unplanned and because neural tube defects can develop in the beginning 28 days of fetal evolution, all women of kid-bearing historic period are recommended to take increased folic acid," said Sohl.

Prenatal vitamins containing folic acid (folate) have shown to dramatically decrease the risk of autism spectrum disorder in the general population and sure loftier-risk families.

Children with older siblings with ASD are statistically far more than probable to as well have ASD than the general population, so using prenatal vitamins is an important part of care during pregnancy.

Parents should consult with their medico nigh appropriate dosing and frequency of these vitamins equally excessive amounts of folate have been shown to potentially increase risk of ASD.

"Almost prenatal vitamins contain about 800 mcg folic acid, which would be plenty if mothers took one per day. Taking more than this is non recommended," said Schmidt.