Breastfeeding and Complementary Feeding in Relation to BMI and Overweight


This study examines the associations between different types of infant feeding and BMI and overweight in childhood. The study is based on the Danish National Birth Cohort, established in 1996.

Full Title of Study: “Breastfeeding and Complementary Feeding in Relation to BMI and Overweight at Ages 7 and 11 Years – a Path Analysis Within the Danish National Birth Cohort”

Study Type

  • Study Type: Observational
  • Study Design
    • Time Perspective: Prospective
  • Study Primary Completion Date: November 1, 2017

Detailed Description

The objective of the study is to examine whether duration of breastfeeding, timing of introduction of complementary food and protein intake at 18 months are associated with BMI and overweight at ages 7 and 11 years, independent of BMI during infancy. Children participating in the Danish National Birth Cohort were followed-up at ages 7 and 11years. Information on infant feeding, protein intake at 18 months, Ponderal Index at birth, child BMI (5 months, 12 months, 7 and 11 years) and several parental factors was available. Path analysis was used to assess the direct and indirect effects of infant feeding on BMI z-scores at ages 7 (n= 36,481) and 11y (n=22,047). Logistic regression analyses were used to examine associations with overweight.


  • Other: Danish National Birth Cohort
    • DNBC is a nationwide cohort study of pregnant women and their offspring. The women were enrolled early during pregnancy between 1996 and 2002. They provided information on exposures during and after pregnancy by means of four computer-assisted telephone interviews in gestational weeks 12 and 30 and post-partum when the child was 6 and 18 months old.

Clinical Trial Outcome Measures

Primary Measures

  • Child overweight
    • Time Frame: 2003-2014
    • The parent reported the height and weight of the children at approximately 7 and 11 years of age.

Participating in This Clinical Trial

Inclusion Criteria

  • The women were invited at their first antenatal visit at the general practitioner.Women were included if they intended to carry the pregnancy to term, had a permanent address in Denmark, and spoke Danish well enough to participate in telephone interviews. Exclusion Criteria:

  • Women who were not pregnant.

Gender Eligibility: Female

Minimum Age: N/A

Maximum Age: N/A

Are Healthy Volunteers Accepted: Accepts Healthy Volunteers

Investigator Details

  • Lead Sponsor
    • University Hospital Bispebjerg and Frederiksberg
  • Collaborator
    • University of Copenhagen
  • Provider of Information About this Clinical Study
    • Principal Investigator: Camilla Schmidt Morgen, Project coordinator and primary investigator – University Hospital Bispebjerg and Frederiksberg

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