The Association between Vitamin D Status and Autism Spectrum Disorder (ASD): A Systematic Review and Meta-Analysis
Nutrients 2021, 13(1), 86; https://doi.org/10.3390/nu13010086 (registering DOI)
by Zuqun Wang 1,2OrcID,Rui Ding 1,2 andJuan Wang 1,2,*
- 1 Department of Biomedical Informatics, School of Basic Medical Sciences, Peking University, Beijing 100191, China
- 2 Autism Research Center, Peking University Health Science Center, Beijing 100191, China
Autism category in Vitamin D Life starts with
Autism category has - 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
- 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 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
- 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 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 gets to the cells)
This list is automatically updated
- Autism treated by an activator of the Vitamin D Receptor: supforaphane - March 2024
- Autism may be synergistically treated by Vitamin D and probiotics – July 2022
- Autism 2X to 3X more likely if poor Vitamin D Receptor – June 2020
- A good Vitamin D Receptor (or perhaps more vitamin D) protects against lead during pregnancy
- Autism much more likely if poor Vitamin D Receptor – 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
Autism and Virus/Vaccines
This list is automatically updated
- Fewer neurons in males born from COVID-19 vaccinated mothers (rats) - Jan 2024
- Vaccinations resulted in increased office visits for children 16 months later - Nov 2020
- Does a vaccine increase the risk of Autism – March 2019
- Autism 2.75 X more likely in Hib vaccines containing Mercury – May 2018
- Vaccinated children had more chronic diseases - Sept 2018
- Autism and ADHD type disorders were 14X more likely in survey of extreme preterm vaccinated infants - April 2017
Dr. Cannell on Autism and Vitamin D in Vitamin D Life
- 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
Autism and Omega-3
This list is automatically updated
- Many autistic children are getting some Vitamin D, Omega-3, probiotics, etc. – Aug 2019
- Autistic symptoms reduced by Vitamin D and or Omega-3 – RCT March 2019
- Omega-3 probably can decrease Autism and ADHD – March 2019
- Autism treated in one person by Omega-3 plus Vitamin D – Dec 2018
- Autism problems reduced by Vitamin D, Omega-3 – RCT Oct 2018
- ADHD, Autism, Early Psychosis and Omega-3 – review Dec 2017
- Autism risks include chemicals, deficiency of vitamin D, Omega-3 – mini-review April 2016
- Serotonin regulated by Vitamin D – part 1 autism – Feb 2014
Items in both categories Autism and Meta-analysis:
- Incidence Autism and ADHD reduced 18 percent per 10 ng of Vitamin D during pregnancy – meta-analysis Jan 2022
- Autism associated with low Vitamin D (again) – Meta-Analysis Jan 2021
- Autism 2X more likely if poor Vitamin D Receptor (yet again) – meta-analysis Jan 2020
- Autism risk increased 30 percent by Cesareans (both low vitamin D) – meta-analysis Sept 2019
- Increased risk of ADHD (28 pct.) and Autism (58 pct.) if low vitamin D during pregnancy – meta-analysis Jan 2019
- Autism risk factors – many are associated with low vitamin D – meta-meta-analysis March 2017
- Autism is associated with low vitamin D – meta-analysis Oct 2015
Items in both categories Autism and Vitamin D Receptor:
- Autism treated by an activator of the Vitamin D Receptor: supforaphane - March 2024
- Autism may be synergistically treated by Vitamin D and probiotics – July 2022
- Autism 2X to 3X more likely if poor Vitamin D Receptor – June 2020
- A good Vitamin D Receptor (or perhaps more vitamin D) protects against lead during pregnancy
- Autism much more likely if poor Vitamin D Receptor – many studies
 Download the PDF from Vitamin D Life
The association between vitamin D status and autism spectrum disorder (ASD) is well-investigated but remains to be elucidated. We quantitatively combined relevant studies to estimate whether vitamin D status was related to ASD in this work. PubMed, EMBASE, Web of Science, and the Cochrane Library were searched to include eligible studies. A random-effects model was applied to pool overall estimates of vitamin D concentration or odds ratio (OR) for ASD. In total, 34 publications involving 20,580 participants were identified in this present study. Meta-analysis of 24 case–control studies demonstrated that children and adolescents with ASD had significantly lower vitamin D concentration than that of the control group (mean difference (MD): −7.46 ng/mL, 95% confidence interval (CI): −10.26; −4.66 ng/mL, p < 0.0001, I2 = 98%). Quantitative integration of 10 case–control studies reporting OR revealed that lower vitamin D was associated with higher risk of ASD (OR: 5.23, 95% CI: 3.13; 8.73, p < 0.0001, I2 = 78.2%). Analysis of 15 case–control studies barring data from previous meta-analysis reached a similar result with that of the meta-analysis of 24 case–control studies (MD: −6.2, 95% CI: −9.62; −2.78, p = 0.0004, I2 = 96.8%), which confirmed the association. Furthermore, meta-analysis of maternal and neonatal vitamin D showed a trend of decreased early-life vitamin D concentration in the ASD group (MD: −3.15, 95% CI: −6.57; 0.26, p = 0.07, I2 = 99%).
Meta-analysis of prospective studies suggested that children with reduced maternal or neonatal vitamin D had 54% higher likelihood of developing ASD (OR: 1.54, 95% CI: 1.12; 2.10, p = 0.0071, I2 = 81.2%). These analyses indicated that vitamin D status was related to the risk of ASD. The detection and appropriate intervention of vitamin D deficiency in ASD patients and pregnant and lactating women have clinical and public significance.
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