Autism 4 times more likely if low vitamin D during first trimester – Oct 2016

Lower maternal serum 25(OH) D in first trimester associated with higher autism risk in Chinese offspring

Journal of Psychosomatic Research, Volume 89, October 2016, Pages 98–101, http://dx.doi.org/10.1016/j.jpsychores.2016.08.013
Jianzhang Chen a, b, chanjz@126.com, Kuolin Xin b, Junjie Wei c, Kangli Zhang b, , , Huajun Xiao d

Highlights

• Vitamin D deficiency was hypothesized to play role in ASD.
• Maternal 25(OH) D in autistic group lower than in typically-developing group
• Maternal 25(OH) D concentrations were associated with risk of developing autism.
• This is an opportunity for prenatal intervention to reduce the risk for autism.

Objective
The aim of this study was to examine the association between maternal serum vitamin D status in first trimester and risk of ASD at age 3–7 years in the offspring.

Methods
Using a case-control design, 68 children diagnosed with ASD and 68 sex and age matched typically-developing children were included. Archived maternal blood samples from the first trimester of pregnancy (11–13 weeks gestational age) were identified for those participants. Maternal serum levels of 25 hydroxyvitamin D3 [25(OH) D], unmetabolized folic acid (FA), vitamin B12, homocysteine (HCY) and High Sensitivity C Reactive protein (CRP) were measured from those samples. We examined the associations between those factors in pregnancy and diagnosis of ASD with logistic regression using SPSS.

Results
Mothers in autistic group had significantly lower maternal serum levels of 25(OH) D than in typically-developing group [19.2(IQR: 15.8–22.9) ng/ml vs. 24.3 (19.3–27.3) ng/ml, P < 0.001], with 55.9% and 29.4% being vitamin D deficient, respectively (P < 0.001). Levels of 25(OH) D increased with decreasing severity of ASD as defined by the CARS score (r = - 0.302, P < 0.001). Maternal first trimester serum levels of 25(OH) D in the lower 3 quartiles (quartile 1, 2, 3) (compared to the highest quartile) was associated with increased odds of ASD diagnosis in offspring [OR (95% CI) Q1: 1.36(0.84–2.58, P = 0.25); Q2: 2.68(1.44–4.29, P = 0.006); Q3:3.99 (2.58–7.12, P < 0.001)].

Conclusions
Lower first trimester maternal serum levels of 25(OH) D were associated with increased risk of developing autism in offspring. If these findings are confirmed, this may present an opportunity for prenatal intervention to reduce the risk for ASD.

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See also VitaminDWiki

• Autism associated with low vitamin D during pregnancy – Nov 2016
• Autistic measure 5X more likely if low vitamin D in second trimester – Oct 2012
• Autism rate in siblings reduced 4X by vitamin D: 5,000 IU during pregnancy, 1,000 IU to infants – Feb 2016
• Autism is associated with low vitamin D – meta-analysis Oct 2015
• Most Autism Risk factors are associated with low vitamin D - March 2014
• Autism and Vitamin D massive review – latitude, season, migration, VitD levels and intervention – April 2016
• Autism 17 times more likely with excessive Folic Acid and B-12 (now added to bread) – May 2016

Autism category in VitaminDWiki starts with

Autism category has 163 items

 - see also Overview Autism and vitamin D,  Autoimmune ,   Cognitive,    ADHD
Interesting Autistic studies
Autism associated with low Vitamin D

• 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
• Autistics have half of the response to Vitamin D – RCT Oct 2018
• Vitamin D fights autism - trying to figure out how and why – May 2022

Autism treated by Vitamin D

• Autism risk is reduced by Vitamin D – early pregnancy or chlldhood – Umbrella review – July 2024
• 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 reduced 24% for each 4 ng more Vitamin D while pregnant ( ADHD 12%) – Feb 2024
• Low maternal Vitamin D results in larger portion of brain associated with autism – Jan 2020
• Autism risk reduced 2X by prenatal vitamins (Vitamin D or Folic) – Feb 2019
• Autism 3X more likely after closely spaced pregnancy vs 3 year apart– Jan 2011
• Low Vitamin D decreases fertility and increases subsequent autism, ADHD, etc – Feb 2018
• Women who had supplemented with any vitamins were 6 X less likely to have autistic offspring – Jan 2018
• 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 gets to the cells)
This list is automatically updated

Autism - other risk factors

• Autistic symptoms reduced by Vitamin D and or Omega-3 – RCT 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

6 Autism and Virus/Vaccines

Dr. Cannell on Autism and Vitamin D in VitaminDWiki

• 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

7 studies: Autism reduced by Omega-3