Month of Conception and Learning Disabilities: A Record-Linkage Study of 801,592 Children.
Am J Epidemiol. 2016 Oct 1;184(7):485-493. Epub 2016 Sep 20. DOI: 10.1093/aje/kww096
Mackay DF, Smith GC, Cooper SA, Wood R, King A, Clark DN, Pell JP.
- Little sun in first trimester, 2.9 X more likely to have learning disabilities – June 2019
- Health problems are related to birth month - June 2015
- Multiple Sclerosis 23 percent more likely if born in April vs. Oct – meta-analysis Nov 2012
- Overview Autism and vitamin D
- Season of Birth category listing has 53 items along with related searches
- Diseases correlated to month of birth – 2008 which has the following chart
Cognitive category starts with the following
Very brief summary of Cognitive decline
Treatment : Vitamin D intervention slows or stops progression
Prevention : Many observational studies - perhaps Vitamin D prevents
Omega-3 both prevents and treats cognition
Wonder the benefits if both Vitamin D AND Omega-3 were to be used
Dementia page - 50 items
see also Overview Alzheimer's-Cognition and Vitamin D
Overview Parkinson's and Vitamin D
Cardiovascular (8 studies), Genetics (9 studies), Vitamin D Receptor (16 studies), Omega-3 (54 studies), Intervention (20 studies), Meta-analyses (22 studies), Depression (25 studies), Parkinson's (26 studies)
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Poor cognition 26 percent more likely if low Vitamin D (29 studies) – meta-analysis July 2017
Every schizophrenia measure was improved when vitamin D levels were normalized – June 2021
Cognitive Impairment and Dementia often associated with low Vitamin D – April 2020
IQ levels around the world are falling (perhaps lower Vitamin D, Iodine, or Omega-3)
Search VitaminDWiki for "WHITE MATTER" 325 items as of March 2023
Types of evidence that Vitamin D helps brain problems - 2014
Download the PDF from VitaminDWiki
Autism
Learning Disabilities
Learning Difficulties (lncluding dyslexia)
Learning disabilities have profound, long-lasting health sequelae. Affected children born over the course of 1 year in the United States of America generated an estimated lifetime cost of $51.2 billion. Results from some studies have suggested that autistic spectrum disorder may vary by season of birth, but there have been few studies in which investigators examined whether this is also true of other causes of learning disabilities. We undertook Scotland-wide record linkage of education (annual pupil census) and maternity (Scottish Morbidity Record 02) databases for 801,592 singleton children attending Scottish schools in 2006-2011. We modeled monthly rates using principal sine and cosine transformations of the month number and demonstrated cyclicity in the percentage of children with special educational needs. Rates were highest among children conceived in the first quarter of the year (January-March) and lowest among those conceived in the third (July-September) (8.9% vs 7.6%; P < 0.001).
Seasonal variations were specific to
- autistic spectrum disorder,
- intellectual disabilities, and
- learning difficulties (e.g., dyslexia)
and were absent for sensory or motor/physical impairments and mental, physical, or communication problems. Seasonality accounted for 11.4% (95% confidence interval: 9.0, 13.7) of all cases. Some biologically plausible causes of this variation, such as infection and maternal vitamin D levels, are potentially amendable to intervention.