200 IU of Vitamin D does not prevent preeclampsia – RCT Aug 2012

Effect of Calcium-vitamin D Supplementation on Metabolic Profiles in Pregnant Women at Risk for Pre-eclampsia: A Randomized Placebo-controlled Trial

Pakistan Journal of Biological Sciences 2012. Volume: 15, Issue: 7, pages/rec.No: 316-324
Zatollah Asemi ; Zohreh Tabassi ; Zahra Heidarzadeh ; Hassan Khorammian ; Sima-Sadat Sabihi ; Mansooreh Samimi

Increased metabolic profiles during pregnancy are associated with an increased risk of maternal and neonatal morbidity and remain a significant medical challenge. To our knowledge, no reports are available indicating the effects of calcium-vitamin D supplementation on metabolic profiles among pregnant women at risk for pre-eclampsia. This study was designed to determine the effects of consumption calcium-vitamin D supplements on metabolic profiles among Iranian pregnant women at risk for pre-eclampsia.

This randomized single-blind controlled clinical trial was performed among 49 pregnant women at risk for pre-eclampsia, primigravida, aged 18-35 year old who were carrying singleton pregnancy at their third trimester.

Subjects were randomly assigned to consume the placebo (n = 25) or calcium-vitamin D supplements (n = 24) for 9 weeks. Calcium-vitamin D supplements were containing 500 mg carbonate calcium plus 200 IU vitamin D3. Fasting blood samples were taken at baseline and after 9 week intervention to measures of Fasting Plasma Glucose (FPG) and serum lipid profiles. Consumption of calcium-vitamin D supplements resulted in decreased FPG and serum triglycerides levels as compared to the placebo (-9.1 vs. 0.5 mg dL-1; p = 0.03, -11.7 vs. 49.9 mg dL-1; p = 0.001, respectively).

No significant differences were found comparing calcium-vitamin D supplements and the placebo in terms of their effect on serum total-, HDL-, LDL-cholesterol levels. Within-group differences in the placebo group revealed a significant increase in serum triglycerides levels (+49.9 mg dL-1, p<0.0001).

In conclusion, consumption of calcium-vitamin D supplements for 9 weeks during pregnancy among pregnant women at risk for pre-eclampsia resulted in decreased FPG and serum triglycerides levels as compared to the placebo group, but could not affect serum total-, HDL-, LDL-cholesterol levels.

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Preeclampsia reduced by 33 percent if high vitamin D – meta-analysis Feb 2023

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