Journal
PUBLIC HEALTH NUTRITION
Volume 25, Issue 11, Pages 3025-3035Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S1368980022001574
Keywords
Neural tube defects; Folic acid supplementation; Folic acid; Obesity pregnancy
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This study found suboptimal folic acid supplementation practices among the antenatal population, particularly in women with obesity. Increased patient education and awareness are needed to align folic acid supplementation practices with best practice guidelines during the antenatal period.
Objective: Neural tube defects (NTD) are potentially preventable by periconceptual folic acid supplementation. Women with obesity are at higher risk of NTD, therefore, are recommended a higher dose of 5 mg folic acid to mitigate this risk. The aim of this study was to evaluate maternal practice of folic acid supplementation amongst the antenatal population in relation to maternal obesity status. Design: Prospective observational study. Setting: Women <= 18 weeks' gestation at their first antenatal appointment attending University Maternity Hospital Limerick (Ireland) were recruited. Maternal height and weight were measured. Obesity was defined at a threshold of >= 30 center dot 0 kg/m(2) and >= 27 center dot 5 kg/m(2) when adjusting for ethnicity. A two-part questionnaire captured maternal characteristics and assessed supplementation compliance, commencement and dosage. Fisher's exact test for independence analysed differences in variables. A P value of Participants: A total of 328 women participated over a duration of 6 weeks. Results: Mean gestational age was 12 center dot 4 +/- 1 center dot 4 weeks and mean BMI 26 center dot 7 kg/m(2) +/- 5 center dot 2 kg/m(2). 23 center dot 8 % (n 78) were classified as obese. 96 center dot 5 % (n 315) were taking folic acid and 95 center dot 7 % (n 314) supplemented daily. 30 center dot 2 % (n 99) commenced supplementation 12 weeks prior to conception. Overall, 57 center dot 9 % (n 190) of women met folic acid supplementation dose requirements. 89 center dot 1 % (n 55) of women with obesity did not. Women with obesity were less likely to meet the higher folic acid supplementation dose requirements (P =< 0 center dot 001). Conclusion: Folic acid supplementation practices within this cohort were suboptimal to prevent their risk of NTD. This study showed inadequate compliance of folic acid supplementation, and inadequate dosage for women with obesity. Increased patient education and awareness are needed within the antenatal period of pregnancy to bring folic acid supplementation practices in line with best practice guidelines.
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