de Araújo CAL, et al. - Researchers aimed at ascertaining how oral magnesium supplementation influence preeclampsia incidence in low income pregnant women. In this randomized, double-blind, placebo-controlled trial, they performed enrollment of 318 low-income Brazilian pregnant women, ie annual per capita income of US$ 1025 or less. Participants were enrolled in this study at gestational age between 12 and 20 weeks and were randomized to receive magnesium citrate capsule (300 mg magnesium citrate) or a daily placebo capsule, until delivery. Outcomes revealed no reduction in the incidence of preeclampsia in low-income and low-risk pregnant women in correlation with receiving oral magnesium supplementation.