Toggle Health Problems and D

Little sun in first trimester, 2.9 X more likely to have learning disabilities – June 2019

Antenatal exposure to solar radiation and learning disabilities: Population cohort study of 422,512 children

Scientific Reports volume 9, Article number: 9356 (2019)
Claire E. Hastie, Daniel F. Mackay, Tom L. Clemens, Mark P. C. Cherrie, Albert King, Chris Dibben & Jill P. Pell


It is extremely important to get Sun, UVB, or at least Vitamin D before and during pregnancies
Note: This study is based on maxium possible ambient UVB during pregnancies and NOT
1) How much UVB was stopped by air pollution
2) How much UVB was stopped by clouds
3) How much UVB was stopped by clothes
4) How much much UVB was stopped by dark skin color
5) How much Vitamin D was lost due to obesity



VitaminDWiki – Season of Birth category contains:

Season of birth is a good proxy for Vitamin D (for people far from the Equator)
Statistisically significant, but rarely greater than 20% change
Some health problems need Vitamin D in 2 or 3 trimesters, so are not associated with season
Perhaps some people in born in poor season will need more vitamin D all of their lives

Some Season of Birth studies

see wikipage: http://www.vitamindwiki.com/tiki-index.php?page_id=1715
Brain Development starts in first trimester
Ensure a healthy pregnancy and baby - take Vitamin D before conception has the following
Start Vitamin D soon if pregnant VDW 9923

 Download the PDF from VitaminDWiki
Raw Data

First Timester portion of UVB table with annotations

Entire UVB Chart

Learning disability varies by month of conception. The underlying mechanism is unknown but vitamin D, necessary for normal brain development, is commonly deficient over winter in high latitude countries due to insufficient ultraviolet radiation. We linked the 2007–2016 Scottish School Pupil Censuses to Scottish maternity records and to sunshine hours and antenatal ultraviolet A/B radiation exposure derived from weather stations and satellites respectively. Logistic regression analyses were used to explore the associations between solar radiation, then ultraviolet B, and learning disabilities, adjusting for the potential confounding effects of month of conception and sex. Of the 422,512 eligible, singleton schoolchildren born at term in Scotland, 79,616 (18.8%) had a learning disability. Total antenatal sunshine hours (highest quintile; adjusted OR 0.89; 95% CI: 0.86, 0.93; p < 0.001) and ultraviolet B exposure (highest quintile; adjusted OR 0.55; 95% CI: 0.51, 0.60; p < 0.001) were inversely associated with learning disabilities with evidence of a dose-relationship. The latter association was independent of ultraviolet A exposure. Significant associations were demonstrated for exposure in all three trimesters. Low maternal exposure to ultraviolet B radiation may play a role in the seasonal patterning of learning disabilities. Further studies are required to corroborate findings and determine the effectiveness of supplements.

No statisitically significant relationship between low 1st trimester D levels and Leaning disorders - Sept 2021

Prenatal Vitamin D Levels in Maternal Sera and Offspring Specific Learning Disorders
 Download the PDF from VitaminDWiki
1996, only about 10% had > 30 ng

Created by admin. Last Modification: Friday April 19, 2024 23:47:45 GMT-0000 by admin. (Version 21)

Attached files

ID Name Comment Uploaded Size Downloads
16273 Learning disorders.pdf admin 23 Sep, 2021 592.36 Kb 269
12226 LD all trimester.jpg admin 29 Jun, 2019 116.28 Kb 725
12224 Brain development.jpg admin 29 Jun, 2019 59.66 Kb 719
12223 Learning Disabilities.jpg admin 29 Jun, 2019 106.20 Kb 866
12222 Learning vs conception month.jpg admin 29 Jun, 2019 47.24 Kb 749
12221 Antenatal exposure to solar radiation and learning disabilities - 2019.pdf admin 29 Jun, 2019 878.59 Kb 651