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Concealing Clothing in Canada: half the level of vitamin D in blood – May 2012

Vitamin D and Musculoskeletal Status in Nova Scotian Women Who Wear Concealing Clothing

Nutrients 2012, 4(5), 399-412; doi:10.3390/nu4050399 (doi registration under processing)
Rani C. I. Ojah† and Jo M. Welch†,* Author to whom correspondence should be addressed.
School of Health and Human Performance, Dalhousie University, Halifax, NS B3H 3J5, Canada
Received: 20 April 2012; in revised form: 2 May 2012 / Accepted: 16 May 2012 / Published: 24 May 2012
(This article belongs to the Special Issue Vitamin D)

Abstract: Bone and muscle weakness due to vitamin D deficiency is common among Muslim women who reside in sunny, equatorial countries. The purpose of this study was to determine if living in a northern maritime location additionally disadvantages women who wear concealing clothes. A cross-sectional matched pair design was used to compare women who habitually wore concealing clothing with women who dressed according to western norms. Each premenopausal hijab-wearing woman (n = 11) was matched by age, height, weight and skin tone with a western-dressed woman. Subjects were tested by hand grip dynamometry to assess muscular strength and by quantitative ultrasound at the calcaneus to assess bone status. Nutritional intake was obtained by 24 h recall. Serum 25-hydroxyvitamin D (s-25(OH)D) status was determined in seven matched pairs.

The hijab group had lower s-25(OH)D than women who wore western clothes (40 ± 28 vs. 81 ± 32 nmol/L, p = 0.01).
Grip strength in the right hand was lower in the hijab-wearing women (p = 0.05) but this appeared to be due to less participation in intense exercise.
Bone status did not differ between groups (p = 0.9).

Dietary intake of vitamin D was lower in the hijab-wearers (316 ± 353 vs. 601 ± 341 IU/day, p = 0.001).
This pilot study suggests that women living in a northern maritime location appear to be at risk for vitamin D insufficiency and therefore should consider taking vitamin D supplements.


Strange: women in western style clothing had MORE fractures

See also VitaminDWiki


VitaminDWiki pages containing CLOTH in title (22 as of Dec 2021)

Items found: 22
Title Modified
More hijab clothing may have resulted in 6X increase in Multiple Sclerosis in Tehran – May 2013 23 Aug, 2023
Concealing Clothing in Canada: half the level of vitamin D in blood – May 2012 22 Apr, 2022
Saudi females twice as likely to be vitamin D deficient as males (cloth) – July 2015 27 Dec, 2021
Ultra-orthodox Jews also suffer from 10 ng vitamin D levels (cloth) – Nov 2010 10 Dec, 2021
Need 1 hour of noon sun to get Hijab women to 20 ng of Vitamin D (cloth) – June 2019 10 Dec, 2021
COVID-19 increased 3.5 X if Ultra-Orthodox (cloth) Sept, 2020 10 Dec, 2021
400 IU of vitamin D helped a few adults (Orthodox Jewish mothers - heavy clothing) – 2001 10 Dec, 2021
Jordanian women vitamin D – 16 ng if Western clothing – 12 ng otherwise – Aug 2011 07 Aug, 2021
Burka clothing reduces vitamin D levels, which causes pregnancy problems – Oct 2015 07 Aug, 2021
Ultra-Orthodox Jews have concealing clothing, high levels of COVID-19, and ultra low Vitamin D - Feb 2021 07 Aug, 2021
Concealing clothing resulted in only 8 ng vitamin D – Feb 2011 07 Aug, 2021
Concealing clothing often results in low vitamin D levels (Sikh children in this case) – Aug 2021 07 Aug, 2021
Concealing clothing worn by Christian Orthodox monks result in low vitamin D (9 ng) – Nov 2018 14 Nov, 2018
Weak bones (Osteopenia) in 93 percent of women in Pakistan attending University and wearing Islamic clothes – March 2017 18 Mar, 2017
Permethrin-dipped clothing kills Zika mosquitoes even after 10 washings – Oct 2016 09 Sep, 2016
3 primates have higher levels of vitamin D than clothed humans, level varies between individuals – April 2015 10 May, 2015
Iran Multiple Sclerosis review finds huge increase in women (no mention of clothing) – Nov 2013 10 Aug, 2014
If heavily clothed, very little vitamin D – Dec 2012 22 Mar, 2014
Breast Cancer patients wearing concealing clothing were 13X more likely to be vitamin D deficient – March 2014 14 Mar, 2014
Excessive clothes and being indoors results in very low vitamin D levels – Nov 2011 01 Dec, 2013
UPF = SPF for clothing 01 Feb, 2012
Skin color and clothing but not sunscreens reduce vitamin D – Oct 2010 16 Oct, 2010