ClinicalTrials.gov record

Completed Not applicable Interventional Accepts healthy volunteers Results available

Impact of Vitamin D Supplementation on Lactation Associated Bone Loss

ClinicalTrials.gov ID: NCT00903344

Public ClinicalTrials.gov record NCT00903344. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

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ClinicalTrials.gov public records Last synced Sep 9, 2026, 10:30 PM EDT

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Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

Studies have shown that lactation is associated with a loss of bone density from four to seven percent at the spine and hip among women who lactate for six months. Decline in bone density with lactation occurs rapidly. Although bone density increases after weaning, there is controversy on whether or not it is completely restored. Epidemiological studies find no significant negative impact of lactation on bone mass or fractures, and in fact there is evidence that lactation has a positive effect on bone mass. We think that interventions that attenuate this physiologic loss of bone that is associated with lactation and accelerate restoration of bone mass after weaning may result in improved long term bone mass and diminished fracture risk.

Study identification

NCT ID: NCT00903344
Recruitment status: Completed
Study type: Interventional
Phase: Not applicable
Lead sponsor: Leigh Eck, MD; Other
Enrollment: 22 participants

Conditions and interventions

Conditions

Osteoporosis

Interventions

Vitamin D3 Drug
Multivitamin Dietary Supplement

Drug · Dietary Supplement

Eligibility (public fields only)

Age range: 18 Years and older
Sex: Female
Healthy volunteers: Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date: Nov 30, 2009
Primary completion: May 31, 2012
Completion: May 31, 2012
Last update posted: Aug 17, 2014

2009 – 2012

United States locations

U.S. sites: 1
U.S. states: 1
U.S. cities: 1

Facility	City	State	ZIP	Site status
University of Kansas Medical Center	Kansas City	Missouri	66160	—

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows: Public field values for ClinicalTrials.gov record NCT00903344, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do: No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from: Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh: Last update posted Aug 17, 2014 · Synced Sep 9, 2026

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The complete protocol, eligibility criteria, and contact information for NCT00903344 live on ClinicalTrials.gov.

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