An evidence review and nutritional conceptual framework for pre-eclampsia prevention

Mai Lei Woo Kinshella*, Kelly Pickerill, Jeffrey N. Bone, Sarina Prasad, Olivia Campbell, Marianne Vidler, Rachel Craik, Marie Laure Volvert, Hiten D. Mistry, Eleni Tsigas, Laura A. Magee, Peter Von Dadelszen, Sophie E. Moore, Rajavel Elango

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

4 Citations (Scopus)

Abstract

Pre-eclampsia is a serious complication of pregnancy, and maternal nutritional factors may play protective roles or exacerbate risk. The tendency to focus on single nutrients as a risk factor obscures the complexity of possible interactions, which may be important given the complex nature of pre-eclampsia. An evidence review was conducted to compile definite, probable, possible and indirect nutritional determinants of pre-eclampsia to map a nutritional conceptual framework for pre-eclampsia prevention. Determinants of pre-eclampsia were first compiled through an initial consultation with experts. Second, an expanded literature review was conducted to confirm associations, elicit additional indicators and evaluate evidence. The strength of association was evaluated as definite relative risk (RR) < 0·40 or ≥3·00, probable RR 0·40-0·69 or 1·50-2·99, possible RR 0·70-0·89 or 1·10-1·49 or not discernible RR 0·90-1·09. The quality of evidence was evaluated using Grading of Recommendations, Assessment, Development and Evaluation. Twenty-five nutritional factors were reported in two umbrella reviews and twenty-two meta-analyses. Of these, fourteen were significantly associated with pre-eclampsia incidence. Higher serum Fe emerged as a definite nutritional risk factors for pre-eclampsia incidence across populations, while low serum Zn was a risk factor in Asia and Africa. Maternal vitamin D deficiency was a probable risk factor and Ca and/or vitamin D supplementation were probable protective nutritional factors. Healthy maternal dietary patterns were possibly associated with lower risk of developing pre-eclampsia. Potential indirect pathways of maternal nutritional factors and pre-eclampsia may exist through obesity, maternal anaemia and gestational diabetes mellitus. Research gaps remain on the influence of household capacities and socio-cultural, economic and political contexts, as well as interactions with medical conditions.

Original languageEnglish
Pages (from-to)1065-1076
Number of pages12
JournalBritish Journal of Nutrition
Volume130
Issue number6
DOIs
Publication statusPublished - 28 Sept 2023

Keywords

  • Conceptual framework
  • Evidence map
  • Maternal dietary patterns
  • Micronutrients
  • Pre-eclampsia prevention
  • Pregnancy

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