• Seideh Hanieh Alamolhoda, Masoumeh Simbar, Parvin Mirmiran, and Parvaneh Mirabi.
• Midwifery and Reproductive Health Research Center, Department of Midwifery and Reproductive Health, School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
• J Res Med Sci. 2020 Jan 1; 25: 112.

BackgroundPreeclampsia (PE) is a high blood pressure disorder accompanied by proteinuria during pregnancy. It remains unclear whether dietary trans-fatty acid (TFA) can influence PE risk. We examined the effect of low TFA dietary intakes during pregnancy on the risk of PE.Materials And MethodsWe conducted a randomized open-label controlled trial on 800 pregnant women admitted to public health centers from May 2014 to August 2016. In the intervention group, participants received a diet with TFA <1% and those in the comparison group, participants had dietary intakes with no change on TFA content. Dietary intakes were assessed by 24-h recalls at the first prenatal care visit (<8 weeks) and at gestational ages of 13, 25, and 35 weeks. The hazard ratio (95% confidence interval [CI]) for PE was calculated using the Cox proportional-hazards model.ResultsThere were statistically significant differences in intakes of daily TFAs between the groups (P < 0.05). The hazard ratio (95% CI) for the incidence of PE in the intervention group was 0.56 (0.33-0.93).ConclusionLow TFA dietary intake during pregnancy reduced the risk of PE.Copyright: © 2020 Journal of Research in Medical Sciences.

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