In utero exposure to extra vitamin D from food fortification and the risk of subsequent development of gestational diabetes: the D-tect study.
Nutr J. 2018 Nov 2;17(1):100. doi: 10.1186/s12937-018-0403-5.
Keller A1, Stougård M2, Frederiksen P2, Thorsteinsdottir F2, Vaag A3, Damm P4,5, Jacobsen R2,6, L Heitmann B2,7,8,9.
Margerine fortification with 50 IU of Vitamin D/100 grams was stopped in Denmark in June 1985. This study compared subsequent GD in the women born before and after that change
Change of Vitamin D Fortification in Denmark
- 60 percent more life births after infertility diagnosis if Vitamin D fortification (Denmark) - Nov 2019
- Vitamin D food fortification during pregnancy reduced gestational diabetes in daughters by 13 percent – Nov 2018
- Vitamin D added to margarine reduced inflammatory bowel disease by 13 percent 30 years later – Nov 2019
- Preeclampsia of offspring cut in half if mother who smoked had vitamin D fortified margarine – Dec 2017
- Danish study of childhood diseases vs vitamin D fortification – May 2013
- 9 studies by Denmak D-Tech group (fortifiy Margarine with Vitamin D) online as of Nov 2019
Pages listed in BOTH of the categories Diabetes and Pregnancy
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- Diabetes 30% more likely in those with low birth weight - June 2023
- Gestational Diabetes Mellitus 10X more-likely if low vitamin D in first trimester – July 2022
- Gestational Diabetes 2.1 X more likely if less than 30 ng of Vitamin D - July 2022
- Gestational diabetes risk reduced 1.5X by Vitamin D – meta-analysis March 2021
- Gestational Diabetes – increased risk if poor Vitamin D Receptor – 2 Meta-Analyses 2021
- Gestational Diabetes 2.4X more likely if poor Vitamin D Receptor (region in China) – June 2019
- Vitamin D food fortification during pregnancy reduced gestational diabetes in daughters by 13 percent – Nov 2018
- Gestational Diabetes 3 X more likely if poor Vitamin D receptor (Turkey) – May 2019
- Type 1 Diabetes risk increased if high postpartum Vitamin D binding protein – Jan 2019
- Vitamin D treats Gestational Diabetes, decreases hospitalization and newborn complications – meta-analysis March 2019
- Maternal Diabetes and Risk of Autism in Offspring – JAMA June 2018
- Gestational Diabetes 39 percent more likely if insufficient Vitamin D – Meta-analysis March 2018
- Gestational Diabetes 1.9 X more likely if low vitamin D – review Dec 2017
- Congenital Heart Disease is associated with gestational diabetes in first trimester (need Vitamin D and Omega-3 early) Dec 2017
- Gestational Diabetes Mellitus associated with 4 Vitamin D genes – Oct 2015
- Gestational diabetes 30 percent less likely if consumed more than 400 IU of vitamin D daily – Oct 2017
- Low vitamin D plus gestational diabetes resulted in increased ICU use, SGA – Oct 2016
- Gestational diabetes treated by Vitamin D plus Omega-3 – RCT Feb 2017
- Gestational Diabetes reduce 3 times by 5,000 IU of Vitamin D – RCT Jan 2016
- Gestational Diabetes treated with 50,000 IU every two weeks – RCT Sept 2016
- Low vitamin D in pregnancy – epigenetic pancreas problems in offspring (mice) – May 2016
- MAGNESIUM IN MAN - IMPLICATIONS FOR HEALTH AND DISEASE – review 2015
- Gestational Diabetes 3.7 X more likely if smoke and have low vitamin D (no surprise) – Feb 2016
- Gestational Diabetes helped by Vitamin D and Calcium (also less C-section and LGA) – RCT Jan 2016
- T1 Diabetes in child not prevented by a tiny amount of vitamin D during pregnancy – Nov 2015
- Gestational Diabetes Mellitus 1.5X more likely if low vitamin D – meta-analysis Oct 2015
- Gestational Diabetes increasing, especially in dark skinned women (low vitamin D) - 2007
- Increased Gestational Diabetes and poorer infant health associated with low vitamin D – June 2015
- Gestational Diabetes in 10 percent of pregnancies, vitamin D probably helps – Jan 2014
- Gestational diabetes – Vitamin D and Calcium provided huge benefits – RCT March 2015
- Gestational diabetes reduced by just two 50,000 IU doses of vitamin D – RCT Nov 2014
- Gestational Diabetes reduced with 50,000 IU of vitamin D every 3 weeks and daily Calcium – RCT June 2014
- Gestational Diabetes reduced 40 percent by 5,000 IU of vitamin D – RCT April 2014
- Insulin resistance during pregnancy improved with 50,000 IU of vitamin D every 2 weeks – RCT April 2013
- Will 1600 IU vitamin D prevent gestational diabetes – no, not enough, July 2013
- Vitamin D protects against many types of health problems – review May 2013
- Dr. Holick video on vitamin D - March 2013
- Gestational diabetes 2.2X more likely below 10 ng of vitamin D – June 2012
- Gestational diabetes 60 percent more likely below 20 ng of vitamin D – meta-analysis Feb 2012
- Type I diabetes 2X more likely if mother had low vitamin D – Jan 2012
- 300,000 IU injection loading dose of vitamin D3 stopped gestational diabetes in RCT – Oct 2011
- Less muscle and insulin resistance for children of vitamin D deficient mothers – Jan 2011
- Vitamin D Levels at Birth May Predict Obesity Risk at age 3 - Oct 2010
Download the PDF from VitaminDWiki
BACKGROUND:
The primary aim of this study was to assess whether exposure during fetal life to extra vitamin D from food fortification was associated with a reduction in the risk of subsequently developing gestational diabetes mellitus (GDM). Furthermore, we examined whether the effect of the vitamin D from fortification differed by women's season of birth.
METHODS:
This semi-ecological study is based on the cancellation in 1985 of the mandatory policy to fortify margarine with vitamin D in Denmark, with inclusion of entire national adjacent birth cohorts either exposed or unexposed to extra vitamin D in utero. The identification of GDM cases later in life among both exposure groups was based on the Danish national health registers. Logistic regression analyses generating odds ratios (ORs) and 95% confidence intervals (95% CIs) were performed.
RESULTS:
Women who were prenatally exposed to the extra vitamin D from fortification tended to have a lower risk of subsequently developing GDM than unexposed women (OR 0.87, 95%CI 0.74,1.02, P = 0.08). When analyses were stratified by women's season of birth, exposed women born in spring had a lower risk of developing GDM compared to unexposed subjects (OR 0.68, 95%CI 0.50,0.94, p = 0.02).
CONCLUSION:
This study suggests that prenatal exposure to extra vitamin D from mandatory fortification may lower the risk of developing gestational diabetes among spring-born women.
TRIAL REGISTRATION: This study is part of the D-tect project, which is registered on clinicaltrials.gov: NCT03330301 .