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Dietary intake and nutritional adequacy prior to conception and during pregnancy: a follow-up study in the north of Portugal.
Public Health Nutr 2009; 12(7):922-31PH

Abstract

OBJECTIVE

To assess maternal diet and nutritional adequacy prior to conception and during pregnancy.

DESIGN

Follow-up of a cohort of pregnant women with collection of questionnaire data throughout pregnancy and after delivery.

SETTING

Antenatal clinics at two public hospitals in Porto, Portugal.

SUBJECTS

Two hundred and forty-nine pregnant women who reported a gestational age below 13 weeks at the time they attended their first antenatal visit.

RESULTS

Intakes of energy and macronutrients were within recommended levels for most women. Pregnancy was accompanied by increases in the dietary intake of vitamins A and E, riboflavin, folate, Ca and Mg, but declines in the intake of alcohol and caffeine. The micronutrients with higher inadequacy prevalences prior to pregnancy were vitamin E (83%), folate (58%) and Mg (19%). These three micronutrients, together with Fe, were also those with the highest inadequacy prevalences during pregnancy (91%, 88%, 73% and 21%, respectively, for folate, Fe, vitamin E and Mg). Ninety-seven per cent of the women reported taking supplements of folic acid during the first trimester, but the median gestational age at initiation was 6.5 (interquartile range 5, 9) weeks. Self-reported prevalences of Fe and Mg supplementation were high, and increased throughout pregnancy.

CONCLUSION

The study identified low dietary intakes of vitamin E, folate and Mg both in the preconceptional period and during pregnancy, and low intake of Fe during pregnancy only. The low dietary intake of folate and the late initiation of supplementation indicate that current national guidelines are unlikely to be effective in preventing neural tube defects.

Authors+Show Affiliations

Department of Hygiene and Epidemiology, University of Porto Medical School, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal. ecbpinto@med.up.ptNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18752697

Citation

Pinto, Elisabete, et al. "Dietary Intake and Nutritional Adequacy Prior to Conception and During Pregnancy: a Follow-up Study in the North of Portugal." Public Health Nutrition, vol. 12, no. 7, 2009, pp. 922-31.
Pinto E, Barros H, dos Santos Silva I. Dietary intake and nutritional adequacy prior to conception and during pregnancy: a follow-up study in the north of Portugal. Public Health Nutr. 2009;12(7):922-31.
Pinto, E., Barros, H., & dos Santos Silva, I. (2009). Dietary intake and nutritional adequacy prior to conception and during pregnancy: a follow-up study in the north of Portugal. Public Health Nutrition, 12(7), pp. 922-31. doi:10.1017/S1368980008003595.
Pinto E, Barros H, dos Santos Silva I. Dietary Intake and Nutritional Adequacy Prior to Conception and During Pregnancy: a Follow-up Study in the North of Portugal. Public Health Nutr. 2009;12(7):922-31. PubMed PMID: 18752697.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dietary intake and nutritional adequacy prior to conception and during pregnancy: a follow-up study in the north of Portugal. AU - Pinto,Elisabete, AU - Barros,Henrique, AU - dos Santos Silva,Isabel, Y1 - 2008/08/27/ PY - 2008/8/30/pubmed PY - 2009/7/25/medline PY - 2008/8/30/entrez SP - 922 EP - 31 JF - Public health nutrition JO - Public Health Nutr VL - 12 IS - 7 N2 - OBJECTIVE: To assess maternal diet and nutritional adequacy prior to conception and during pregnancy. DESIGN: Follow-up of a cohort of pregnant women with collection of questionnaire data throughout pregnancy and after delivery. SETTING: Antenatal clinics at two public hospitals in Porto, Portugal. SUBJECTS: Two hundred and forty-nine pregnant women who reported a gestational age below 13 weeks at the time they attended their first antenatal visit. RESULTS: Intakes of energy and macronutrients were within recommended levels for most women. Pregnancy was accompanied by increases in the dietary intake of vitamins A and E, riboflavin, folate, Ca and Mg, but declines in the intake of alcohol and caffeine. The micronutrients with higher inadequacy prevalences prior to pregnancy were vitamin E (83%), folate (58%) and Mg (19%). These three micronutrients, together with Fe, were also those with the highest inadequacy prevalences during pregnancy (91%, 88%, 73% and 21%, respectively, for folate, Fe, vitamin E and Mg). Ninety-seven per cent of the women reported taking supplements of folic acid during the first trimester, but the median gestational age at initiation was 6.5 (interquartile range 5, 9) weeks. Self-reported prevalences of Fe and Mg supplementation were high, and increased throughout pregnancy. CONCLUSION: The study identified low dietary intakes of vitamin E, folate and Mg both in the preconceptional period and during pregnancy, and low intake of Fe during pregnancy only. The low dietary intake of folate and the late initiation of supplementation indicate that current national guidelines are unlikely to be effective in preventing neural tube defects. SN - 1475-2727 UR - https://www.unboundmedicine.com/medline/citation/18752697/Dietary_intake_and_nutritional_adequacy_prior_to_conception_and_during_pregnancy:_a_follow_up_study_in_the_north_of_Portugal_ L2 - https://www.cambridge.org/core/product/identifier/S1368980008003595/type/journal_article DB - PRIME DP - Unbound Medicine ER -