Dietary supplements contribute substantially to the total nutrient intake in pregnant Norwegian women

Ann Nutr Metab. 2008;52(4):272-80. doi: 10.1159/000146274. Epub 2008 Jul 22.


Background: Use of dietary supplements during pregnancy may give an important contribution to nutrient intake, and for nutrients like folate and vitamin D supplements are recommended. Our objective was to study use and contribution of dietary supplement to nutrient intake among women participating in the Norwegian Mother and Child Cohort Study (MoBa).

Methods: This study is based on 40,108 women participating in MoBa which is conducted by the Norwegian Institute of Public Health. The women had filled inversion 2 of the food frequency questionnaire in MoBa between February 2002 and February 2005.

Results: 81% reported use of one or more dietary supplements. The most commonly used category was cod liver oil/fish oil supplements (59%) followed by singular folic acid supplements (36%) and multivitamin/multimineral supplements (31%). The nutrient contribution of the dietary supplements varied from 65% for folate and vitamin D to 1% for potassium among supplement users. The dietary intake of vitamin D, folate, iodine and iron did not reach the Nordic Recommendations for pregnant women.

Conclusions: Use of supplements improved the intake of folate, iron and vitamin D, but not sufficiently to reach the recommended amounts.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Cohort Studies
  • Diet Surveys
  • Dietary Supplements / statistics & numerical data*
  • Female
  • Fish Oils / administration & dosage*
  • Folic Acid / administration & dosage*
  • Humans
  • Maternal Nutritional Physiological Phenomena*
  • Norway
  • Nutrition Policy*
  • Nutritional Requirements
  • Pregnancy
  • Prospective Studies
  • Self Disclosure
  • Surveys and Questionnaires
  • Vitamin D / administration & dosage*
  • Vitamins


  • Fish Oils
  • Vitamins
  • Vitamin D
  • Folic Acid