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Vitamin D deficiency diseases in dark skinned people living far from equator – Meta-analysis Oct 2013

Population groups in dietary transition.

Food Nutr Res. 2013 Oct 3;57. doi: 10.3402/fnr.v57i0.21668.
Wändell PE.
Centre for Family Medicine, Karolinska Institutet, Huddinge, Sweden.

BACKGROUND: Little is known about the effects of dietary acculturation in minority groups in the Nordic countries, including immigrants from non-Western societies.

METHODS: A search was performed in Medlin33e/PubMed and SweMed+ for articles published in 1990-2011.

RESULTS: A total of 840 articles were identified, with a final 32 articles used to tabulate results which were included in the primary analysis.

High rates of vitamin D deficiency (23 articles) were found in immigrants of non-Western origin; deficiency rates were very high among both pregnant and non-pregnant women, and also among children, with young children of immigrant parents showing 50 times higher risk for rickets when compared to children of indigenous parents.

The risk of iron deficiency (two articles) was high among immigrant women, while the results were inconclusive regarding children.

High rates of dental caries (seven articles) were found among pre-school and younger school children of immigrant origin, while the risk of caries was not as evident among older children.

In a secondary analysis, including 48 articles (results not tabulated), overweight and obesity (14 articles) were seen in many immigrant groups,
resulting in a

  • high prevalence of diabetes (2 review articles from a total of 14 original articles) and
  • incidence of coronary heart disease (CHD; seven articles).

For hypertension (three articles), dyslipidemia (four articles), and dietary patterns among immigrants (10 articles), the results were contradictory.

CONCLUSIONS: Risk of vitamin D deficiency is alarmingly high in the Nordic countries among immigrants of non-Western origin, especially among women. Dental caries is high among immigrant children aged 0-7 years due to a higher intake of sugary products. Overweight and obesity, associated with a higher risk of diabetes and CHD, are prevalent in many immigrant groups and need further attention.

KEYWORDS: Ethnic groups, cardiovascular diseases, dental caries, diabetes, obesity, vitamin D deficiency

PMID: 24106456

Approx 10% of Nordic population are minorities


PDF is attached at the bottom of this page

This study greatly understates the problem :

  1. Vitamin D deficiency has gotten significantly worse during and after the study. It is not a constant
  2. Does not appear to look at descendants or intermarriage, just immigrants
  3. Does not consider the darkness of skin, just country of origin - including Nordic countries as well as Europe
    What about those immegrants who become citizens?
  4. Does not consider what % of their life has been in Nordic countries
    many of these diseases (e.g. cardiovascular, diabetes, obesity) take decades to develop
  5. Does not consider many other diseases associated with vitamin D deficiency (see below)

See also VitaminDWiki - many diseases not mentioned in the study above

Attached files

ID Name Comment Uploaded Size Downloads
3117 Nordic Minorities.pdf admin 13 Oct, 2013 204.21 Kb 1384
3116 Nordic.jpg admin 13 Oct, 2013 196.65 Kb 7692