Association of Maternal Prenatal Vitamin Use With Risk for Autism Spectrum Disorder Recurrence in Young Siblings
JAMA Psychiatry. doi:10.1001/jamapsychiatry.2018.3901
Rebecca J. Schmidt, PhD1,2; Ana-Maria Iosif, PhD1,2; Elizabeth Guerrero Angel, MS1; et al Sally Ozonoff, PhD2,3
All mothers had previously given birth to a child who had become Autistic
This study assumes the reduced Austism rate was due to the prenatal Folic Acid
A 2016 study using 5.000 IU of vitamin D found a 4X reduction in Autism
*Autism rate in siblings reduced 4X by vitamin D: 5,000 IU during pregnancy, 1,000 IU to infants – Feb 2016
Strangely, it is not in the references in this study
- Is High Folic Acid Intake a Risk Factor for Autism?-A Review Nov 2017 10.3390/brainsci7110149. Free PDF
- Review and meta-analysis found that prenatal folic acid was associated with a 58% reduction in autism but had no effect on mental and motor development Nov 2018 doi: 10.1111/apa.14657
- Association of Maternal Use of Folic Acid and Multivitamin Supplements in the Periods Before and During Pregnancy With the Risk of Autism Spectrum Disorder in Offspring - Feb 2018
- Autism 17 times more likely with excessive Folic Acid and B-12 (now added to bread) – May 2016
- Off topic: Folic Acid - the horror story (for a small percentage of people) - Sept 2013
" It seems that at least 10% of the population has the MTHFR polymorphism . . . "
- Vitamin D is 100X better than folic acid during pregnancy
- Increased cows milk allergy if Folic acid or Folate added to vitamin D during pregnancy – June 2016
- Folic acid reduces both premature births and neural tube defects – March 2017
Autism category in VitaminDWiki starts withAutism category has
- Most Autism Risk factors are associated with low vitamin D - March 2014
- Rickets – 26 percent had autism: no rickets, no autism (both associated with low vitamin D) – June 2015
- Premature birth 2.5X more likely if mother had low vitamin D and was having twins – July 2013
- Autism 3X more likely after closely spaced pregnancy vs 3 year apart– Jan 2011
- Having twins takes more vitamin D - May 2011
Autism treated by Vitamin D
- Autism treated by Vitamin D (monthly injection of 150,000 IU) – June 2017
- Autism decreased in 8 out of 10 children supplemented with vitamin D – April 2015
Autism reduced by vitamins before and during pregnancy
- Autism risk reduced 2X by prenatal vitamins (Vitamin D or Folic) – Feb 2019
- Women who had supplemented with any vitamins were 6 X less likely to have autistic offspring – Jan 2018
- Autism rate cut in half when multivitamins (including vitamin D) used during pregnancy – Oct 2017
- Autism rate in siblings reduced 4X by vitamin D: 5,000 IU during pregnancy, 1,000 IU to infants – Feb 2016
Autism and Vitamin D Receptor (not enough Vit D to the tissues)
- Autism associated with low Zinc during pregnancy (Zinc is needed by Vitamin D Receptor) – July 2018
- Autism 2X more likely with Vitamin D Receptor problems – many studies
Autism - other risk factors
- Autistic symptoms reduced by Vitamin D and or Omega-3 – RCT March 2019
- Omega-3 probably can decrease Autism and ADHD – March 2019
- Autism risk increased if infant had antibiotics (2X), acetaminophen (3X), or no vitamin D drops (1.5X) – June 2018
- 20 X more Parkinson's and 100X more Autism with GMO soy in China
- Note >100X increase in Autism while having GMO soy in the US
Vaccines increase the risk
- Does a vaccine increase the risk of Autism – March 2019
- Autism 2.75 X more likely in Hib vaccines containing Mercury – May 2018
- Autism and ADHD type disorders were 14X more likely in survey of extreme preterm vaccinated infants - April 2017
- Off topic: CDC deleted a 3X increase in black male autism due to vaccination – whistle blowing Aug 2014
Dr. Cannell on Autism and Vitamin D
- Autism treated by Vitamin D (80 – 120 ng) – Cannell update May 2018
- Autism Causes, Prevention and Treatment: Vitamin D Deficiency etc. – Book April 2015 Cannell
- Autism cured in a child with Vitamin D, Dr. Cannell comments and cofactor recommendations – March 2015
- Autism and Vitamin D - Dr. Cannell in Life Extension Mag - Jan 2014
- Autism treated by Vitamin D: Dr. Cannell - video June 2013
- includes his list of 27 reasons to associate Vitamin D with Autism in 2013
- Question Is maternal use of prenatal vitamins associated with decreased risk for autism recurrence in siblings of children with autism spectrum disorder?
- Findings In this cohort study of 241 younger siblings of children with autism, the prevalence of autism spectrum disorder was 14.1% in children whose mothers took prenatal vitamins in the first month of pregnancy compared with 32.7% in children whose mothers did not take prenatal vitamins during that time.
- Meaning Maternal daily intake of prenatal vitamins during the first month of pregnancy appears to be associated with reductions in recurrence of autism in high-risk families; additional research is needed to confirm these results, to further investigate specific nutrients, and to inform public health recommendations for autism spectrum disorder prevention.
Importance Maternal use of folic acid supplements has been inconsistently associated with reduced risk for autism spectrum disorder (ASD) in the child. No study to date has examined this association in the context of ASD recurrence in high-risk families.
Objective To examine the association between maternal prenatal vitamin use and ASD recurrence risk in younger siblings of children with ASD.
Design, Setting, and Participants This prospective cohort study analyzed data from a sample of children (n = 332) and their mothers (n = 305) enrolled in the MARBLES (Markers of Autism Risk in Babies: Learning Early Signs) study. Participants in the MARBLES study were recruited at the MIND Institute of the University of California, Davis and were primarily from families receiving services for children with ASD in the California Department of Developmental Services. In this sample, the younger siblings at high risk for ASD were born between December 1, 2006, and June 30, 2015, and completed a final clinical assessment within 6 months of their third birthday. Prenatal vitamin use during pregnancy was reported by mothers during telephone interviews. Data analysis for this study was conducted from January 1, 2017, to December 3, 2018.
Main Outcomes and Measures Autism spectrum disorder, other nontypical development (non-TD), and typical development (TD) were algorithmically defined according to Autism Diagnostic Observation Schedule and Mullen Scales of Early Learning subscale scores.
Results After exclusions, the final sample comprised 241 younger siblings, of which 140 (58.1%) were male and 101 (41.9%) were female, with a mean (SD) age of 36.5 (1.6) months. Most mothers (231 [95.9%]) reported taking prenatal vitamins during pregnancy, but only 87 mothers (36.1%) met the recommendations to take prenatal vitamins in the 6 months before pregnancy. The prevalence of ASD was 14.1% (18) in children whose mothers took prenatal vitamins in the first month of pregnancy compared with 32.7% (37) in children whose mothers did not take prenatal vitamins during that time.
Children whose mothers reported taking prenatal vitamins during the first month of pregnancy were less likely to receive an ASD diagnosis (adjusted relative risk [RR], 0.50; 95% CI, 0.30-0.81) but not a non-TD 36-month outcome (adjusted RR, 1.14; 95% CI, 0.75-1.75) compared with children whose mothers reported not taking prenatal vitamins. Children in the former maternal prenatal vitamin group also had statistically significantly lower autism symptom severity (adjusted estimated difference, –0.60; 95% CI, –0.97 to –0.23) and higher cognitive scores (adjusted estimated difference, 7.1; 95% CI, 1.2-13.1).
Conclusions and Relevance Maternal prenatal vitamin intake during the first month of pregnancy may reduce ASD recurrence in siblings of children with ASD in high-risk families. Additional research is needed to confirm these results; to investigate dose thresholds, contributing nutrients, and biologic mechanisms of prenatal vitamins; and to inform public health recommendations for ASD prevention in affected families.