Arctic school children in Russia: only 1 in 11 has more than 30 ng of Vitamin D – April 2022

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Low vitamin D levels among children and adolescents in an Arctic population

https://doi.org/10.1177/14034948221092287 behind $41 paywall
Svetlana Malyavskaya, Galina Kostrova , Alexander V. Kudryavtsev, ...

Aims:
We aimed to study the vitamin D status of the population of Arkhangelsk, a city in northwestern Russia.

Methods:
A cross-sectional study was conducted to estimate serum 25(OH)D concentrations in Arkhangelsk residents, including 55 neonates and their mothers, 214 children <3 years, 191 schoolchildren (7–8 years), 403 adolescents (13–17 years), 260 university students (18–22 years) and 85 adults (24–60 years). The data were collected from March 2013 to November 2014 and from January 2016 to May 2016

Results:
Normal levels of 25(OH)D (>30 ng/ml) were found in 5% of neonates, 43% of their mothers, 43% of children <3 years, 9% of schoolchildren, 1% of adolescents, 17% of students and 26% of adults. There was a moderate positive correlation (rs = 0.563, p = 0.001) between 25(OH)D levels in mother’s blood and umbilical cord blood.

Conclusions:
Vitamin D deficiency is highly prevalent in the population of Arkhangelsk, particularly in neonates, schoolchildren and adolescents.

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VitaminDWiki 5 studies in both categories Far from Equator and Infant-Child

This list is automatically updated

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VitaminDWiki - Overview of Rickets and vitamin D contains

Rate of rickets is usually < 0.1% of births, unless dark skin, breastfed, preemie, twin, Mongolian, or Russian
Rate of rickets has greatly increased with the drop in vitamin D levels during the past 40 years
400 IU can prevent/treat most rickets Turkey gave vitamin D to EVERY child and eliminated Rickets
Can have rickets without a low serum level of vitamin D (~20% of the time)
Giving enough Vitamin D to the mother (before and after birth) PREVENTS most forms of Rickets
Rate of rickets in some countries varies from 10% to 70% (typically poor health overall)
Rickets has been more than doubling in many countries
Rickets is strongly associated with severe breathing problems (weak ribs)
Bowed legs is not the primary indication of rickets    (3 other indications of rickets are seen more often)
Rickets is typically due to low cellular Vitamin D - April 2024
Some Rickets is due to poor genes - Vitamin D needed lifelong – June 2020
Vitamin D and Rickets consensus took 80 years

Rickets category has 127 items

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Perhaps half of Russian children have rickets, 500 IU vitamin D was not enough – June 2013

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VitaminDWiki - After years of adding vitamin D, Finland now has 38 ng levels - March 2022

It appears that children in Finland are 7X more likely to have good vitamin D levels than children at same latittude in Russia