Season of Birth

~~#00F: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
    Note: some of the season-of-birth effects are due to low vitamin D in future season as well ~~

Some Season of Birth studies

• Season of birth associated with many health problem (UK Biobank) – Nov 2020

• Preterm birth varies with season: 25 percent more likely if conception in autumn – Feb 2022

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

• UV at time of conception associated with Vitamin D Receptor activation 65 years later – Sept 2017

• Autoimmune Addison's Disease – increased risk if born in Dec or Jan – Nov 2016

• Schizophrenia increased 40 percent for Spring births after Danes stopped vitamin D fortification – April 2014

• Season of birth associated with Pneumonia (10 %) and Multiple Sclerosis (30 %) – May 2013

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• Majority of Season of Birth health problems should vanish if take Vitamin D
  100K monthly, or 50K bi-weekly, or 4K daily

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items in "Season of Birth" Category

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Chart of Diseases correlated to month of birth – 2008

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Chart of Schizophrenia vs month of birth

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Effects of Family History and Place and Season of Birth on the Risk of Schizophrenia

Feb 1999 DOI: 10.1056/NEJM199902253400803

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Chart of Age of Menarche and Height vs SoB - Biobank 2015

Season of birth is associated with birth weight, pubertal timing, adult body size and educational attainment: a UK Biobank study

October 2015 DOI:https://doi.org/10.1016/j.heliyon.2015.e00031

📄 Download the PDF from VitaminDWiki

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See related in VitaminDWiki

• Overview Deficiency of vitamin D

• Children with Kawasaki disease are 29 X more likely to be Vitamin D deficient – Jan 2022

• Cancer during childhood - many studies

• Longevity and healthspan increased by Vitamin D, Omega-3, Magnesium - many studies

• Brain and Vitamin D - many studies

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Fetus development vs month of gestation (Some portions need Vitamin D during all phases)

Details at Ensure a healthy pregnancy and baby - take Vitamin D before conception

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Season of Birth primarily associated with Pregnancy, Multiple Sclerosis. and Cognitive categories

Close Associations