Directly quantitated dietary (n-3) fatty acid intakes of pregnant Canadian women are lower than current dietary recommendations.
During pregnancy, (n-3) PUFA are incorporated into fetal brain and retinal lipids. Docosahexaenoic acid [DHA, 22:6(n-3)], in particular, is required physiologically for optimal development and function of the central nervous system. Maternal intake of (n-3) PUFA must be sufficient to maintain maternal tissues stores and meet fetal accruement. Recommendations for pregnant women include an Acceptable Macronutrient Distribution Range (AMDR) of 0.6-1.2% of energy for (n-3) PUFA intake in the current Dietary Reference Intakes, and > or =300 mg/d of DHA suggested by the International Society for the Study of Fatty Acids and Lipids working group. The present study directly quantitated the (n-3) PUFA intake, including DHA, of pregnant, Canadian women (n = 20) in their 2nd and 3rd trimester. Fatty acid intakes were quantitated in triplicate by lipid extraction and GLC of 3-d duplicate food collections calibrated with an internal standard before homogenization. Total fat intakes were also estimated using dietary analysis software from simultaneous 3-d food records to corroborate biochemical analyses. The mean (n-3) PUFA intake was 0.57 +/- 0.06% of energy, with 65% of the women below the AMDR. The mean DHA intake was 82 +/- 33 mg/d, with 90% of the women consuming <300 mg/d. Nutritional education of pregnant women to ensure adequate intakes of (n-3) PUFA for optimal health of mother and child and the inclusion of DHA in prenatal vitamins may be pertinent.
Denomme
Jennifer
J
Department of Human Biology & Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada.
Stark
Ken D
KD
Holub
Bruce J
BJ
D000328:Adult; D015992:Body Mass Index; D002170:Canada; D015930:Diet Records; D002149:Energy Intake; D015525:Fatty Acids, Omega-3 / Q000378:metabolism*; D005260:Female; D006801:Humans; D018673:Nutrition Policy / Q000331:legislation & jurisprudence*; D011247:Pregnancy / Q000502:physiology*
D015525:Fatty Acids, Omega-3