Differences in the dietary requirement for vitamin D among Caucasian and East African women at Northern latitude

2018 ◽  
Vol 58 (6) ◽  
pp. 2281-2291 ◽  
Author(s):  
Kevin D. Cashman ◽  
Christian Ritz ◽  
Folasade A. Adebayo ◽  
Kirsten G. Dowling ◽  
Suvi T. Itkonen ◽  
...  
2007 ◽  
Vol 16 (2) ◽  
pp. 206-213 ◽  
Author(s):  
Susan D.L. Reed ◽  
Mary B. Laya ◽  
Jennifer Melville ◽  
Sirad Y. Ismail ◽  
Caroline M. Mitchell ◽  
...  

2018 ◽  
Vol 119 (4) ◽  
pp. 431-441 ◽  
Author(s):  
Folasade A. Adebayo ◽  
Suvi T. Itkonen ◽  
Taina Öhman ◽  
Essi Skaffari ◽  
Elisa M. Saarnio ◽  
...  

AbstractInsufficient vitamin D status (serum 25-hydroxyvitamin D (S-25(OH)D)<50 nmol/l) is common among immigrants living at the northern latitudes. We investigated ethnic differences in response of S-25(OH)D to vitamin D3 supplementation, through a 5-month randomised controlled trial, in East African and Finnish women in Southern Finland (60°N) from December 2014 to May 2015. Vitamin D intakes (dietary and supplemental) were also examined. Altogether, 191 subjects were screened and 147 women (East Africans n 72, Finns n 75) aged 21–64 years were randomised to receive placebo or 10 or 20 µg of vitamin D3/d. S-25(OH)D concentrations were assessed by liquid chromatography–tandem MS. At screening, 56 % of East Africans and 9 % of Finns had S-25(OH)D<50 nmol/l. Total vitamin D intake was higher in East Africans than in Finns (24·2 (sd 14·3) v. 15·2 (sd 13·4) µg/d, P<0·001). Baseline mean S-25(OH)D concentrations were higher in Finns (60·5 (sd=16·3) nmol/l) than in East Africans (51·5 (sd 15·4) nmol/l) (P=0·001). In repeated-measures ANCOVA (adjusted for baseline S-25(OH)D), mean S-25(OH)D increased by 8·5 and 10·0 nmol/l with a 10-µg dose and by 10·7 and 17·1 nmol/l with a 20-µg dose for Finns and East Africans, respectively (P>0·05 for differences between ethnic groups). In conclusion, high prevalence of vitamin D insufficiency existed among East African women living in Finland, despite higher vitamin D intake than their Finnish peers. Moderate vitamin D3 supplementation was effective in increasing S-25(OH)D in both groups of women, and no ethnic differences existed in the response to supplementation.


Author(s):  
Jeanne Dubino

‘It is one of the great advantages of being a woman that one can pass even a very fine negress without wishing to make an Englishwoman of her.’ Virginia Woolf, A Room of One’s Own At the time Virginia Woolf’s narrator made this observation in the late 1920s, a number of her British and other European contemporary women writers were in fact passing by and indeed living among black women in one of Great Britain’s colonies, Kenya. Isak Dinesen (1885-1962) was among the most famous, and her memoir Out of Africa (1937), commemorates her years on a Kenyan plantation (1914-1931). Along with the canonical Danish Dinesen were British women whose work has been long forgotten, including Nora K. Strange (1884-1974) and Florence Riddell (1885-1960), both of whom wrote what is called the “Kenya Novel.” The Kenya Novel is a subgenre of romantic fiction set in the white highlands of Britain’s Crown Colony Kenya. The titles alone—e.g., Kenya Calling (1928) and Courtship in Kenya (1932) by Strange, and Kismet in Kenya (1927) and Castles in Kenya (1929) by Riddell—give a flavor of their content. Because these novels were popular in Britain, it is very likely that Woolf knew about them, but she does not refer to them in her diaries, letters, or published writing. Even so, it would be worth testing this famous comment by a Room’s narrator about (white) women’s lack of propensity to recreate others in her own image, or more specifically, to dominate the colonial other. How do Woolf’s white contemporaries, living in Kenya, represent black women? Given that Strange and Riddell were part of the settler class, we can expect that their views reflect dominant colonial ideology. The formulaic nature of the Kenya Novel, and its focus on the lives of white settlers, also mean that the portrayal of the lives of the people whose lands were brutally expropriated would hardly be treated with respect or as little more than backdrops. Yet it is important to understand these other global contexts in which Woolf is working and the role that some of her contemporary women writers played in the shaping of them. This paper concludes with an overview of the separate legacies of Woolf and her fellow Anglo-African women writers up to the present day.


2012 ◽  
Vol 71 (OCE2) ◽  
Author(s):  
K. M. Seamans ◽  
M. Kiely ◽  
Jette Jakobsen ◽  
Christel Lamberg-Allardt ◽  
Christian Mølgaard ◽  
...  

2016 ◽  
Vol 104 (5) ◽  
pp. 1301-1309 ◽  
Author(s):  
Taryn J Smith ◽  
Laura Tripkovic ◽  
Camilla T Damsgaard ◽  
Christian Mølgaard ◽  
Christian Ritz ◽  
...  

PLoS ONE ◽  
2012 ◽  
Vol 7 (7) ◽  
pp. e41217 ◽  
Author(s):  
John J. Schellenberg ◽  
Tim J. Dumonceaux ◽  
Janet E. Hill ◽  
Joshua Kimani ◽  
Walter Jaoko ◽  
...  

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