Vitamin D Supplementation Affects Serum High-Sensitivity C-Reactive Protein, Insulin Resistance, and Biomarkers of Oxidative Stress in Pregnant Women.
J Nutr. 2013 Jul 24. (text is behind a paywall)
Asemi Z, Samimi M, Tabassi Z, Shakeri H, Esmaillzadeh A.
Research Center for Biochemistry and Nutrition in Metabolic Diseases and.
Unfavorable metabolic profiles and oxidative stress in pregnancy are associated with several complications. This study was conducted to determine the effects of vitamin D supplementation on serum concentrations of high-sensitivity C-reactive protein (hs-CRP), metabolic profiles, and biomarkers of oxidative stress in healthy pregnant women.
This randomized, double-blind, placebo-controlled clinical trial was conducted in 48 pregnant women aged 18-40 y old at 25 wk of gestation. Participants were randomly assigned to receive either 400 IU/d cholecalciferol supplements (n = 24) or placebo (n = 24) for 9 wk. Fasting blood samples were taken at study baseline and after 9 wk of intervention to quantify serum concentrations of hs-CRP, lipid concentrations, insulin, and biomarkers of oxidative stress. After 9 wk of intervention, the increases in
- serum 25-hydroxyvitamin D and calcium concentrations were greater in the vitamin D group (+3.7 μg/L and +0.20 mg/dL, respectively) than in the placebo group (-1.2 μg/L and -0.12 mg/dL, respectively; P < 0.001 for both).
- Vitamin D supplementation resulted in a significant decrease in serum hs-CRP (vitamin D vs. placebo groups: -1.41 vs. +1.50 μg/mL; P-interaction = 0.01) and
- insulin concentrations (vitamin D vs. placebo groups: -1.0 vs. +2.6 μIU/mL; P-interaction = 0.04) and a significant increase in the
- Quantitative Insulin Sensitivity Check Index score (vitamin D vs. placebo groups: +0.02 vs. -0.02; P-interaction = 0.006),
- plasma total antioxidant capacity (vitamin D vs. placebo groups: +152 vs. -20 mmol/L; P-interaction = 0.002), and
- total glutathione concentrations (vitamin D vs. placebo groups: +205 vs. -32 μmol/L; P-interaction = 0.02) compared with placebo.
- Intake of vitamin D supplements led to a significant decrease in fasting plasma glucose (vitamin D vs. placebo groups: -0.65 vs. -0.12 mmol/L; P-interaction = 0.01),
- systolic blood pressure (vitamin D vs. placebo groups: -0.2 vs. +5.5 mm Hg; P-interaction = 0.01), and
- diastolic blood pressure (vitamin D vs. placebo groups: -0.4 vs. +3.1 mm Hg; P-interaction = 0.01) compared with placebo.
In conclusion, vitamin D supplementation for 9 wk among pregnant women has beneficial effects on metabolic status.
|Vitamin D||+12 ng/ml|
|Serum hs-CRP||-1.4 μg/mL|
|insulin concentrations||-3.6 μIU/mL|
|Quantitative Insulin Sensitivity Check |
|plasma total antioxidant capacity||+172 mmol/L|
|total glutathione concentrations||+237 μmol/L|
|fasting plasma glucose||-0.53 mmol/L|
|systolic blood pressure||-5.7 mm Hg|
|diastolic blood pressure||-3.5 mm Hg|
- Overview Metabolic Syndrome and vitamin D
- Vitamins To Speed Up Metabolism And Aid Weight Loss – May 2011
- Overview Pregnancy and vitamin D which has the following summary
IU Cumulative Benefit Blood level Cofactors Calcium $*/month 200 Better bones for mom
with 600 mg of Calcium
6 ng/ml increase Not needed No effect $0.10 400 Less Rickets (but not zero with 400 IU)
3X less adolescent Schizophrenia
Fewer child seizures
20-30 ng/ml Not needed No effect $0.20 2000 2X More likely to get pregnant naturally/IVF
2X Fewer dental problems with pregnancy
8X less diabetes
4X fewer C-sections (>37 ng)
4X less preeclampsia (40 ng vs 10 ng)
5X less child asthma
2X fewer language problems age 5
42 ng/ml Desirable < 750 mg $1 4000 2X fewer pregnancy complications
2X fewer pre-term births
49 ng/ml Should have
< 750 mg $3 6000 Probable: larger benefits for above items
Just enough D for breastfed infant
More maternal and infant weight
< 750 mg $4