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Dietary Iron Requirements

Pennington Biomedical Research Center · with Cornell University · NCT07139821

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Opens the official ClinicalTrials.gov record, with the study team’s contacts. Bored Studies doesn’t enroll anyone.

Key facts

Compensation
Not posted. Ask the study team before screening.
Who can join
Ages 18–50 · All sexes
Healthy volunteers
Accepted
Study type
Interventional · Not applicable
Target enrollment
300
US sites recruiting
2
Study start
February 6, 2026
Record last updated
April 29, 2026

Status re-checked against ClinicalTrials.gov within the last 12 hours.

What the study is about

Dietary Reference Intakes (DRIs) for iron are based on a relatively small number of studies in European populations. This research study will determine iron needs in a representative sample of adults living in the US using the iron isotope dilution technique. Following administration and equilibration of a stable iron isotope, participants will be followed for a 12 week study period. Blood will be collected every 4 weeks and the isotopic composition will be determined. Results will help update dietary iron guidelines making sure they better match the specific needs of the US population.

Being studied: Stable iron isotope

Conditions: Iron Absorption

Eligibility criteria

Copied from the official record. The study team makes the final decision at screening.

Show full criteria

Inclusion Criteria

  • Males and premenopausal females age 18-50 y
  • Previously participated in an iron stable isotope study or willing to consume an oral stable iron isotope and undergo a one-year equilibration period
  • Willing to refrain from iron-containing supplements for the duration of the study
  • Willing to refrain from tobacco smoking for the duration of the study
  • Have not donated blood 3 months prior to the start of the study and willing to refrain from donating blood for the duration of the study
  • Willing to have blood stored for future use
  • Able and willing to comply with study requirements and consent to participate

Exclusion Criteria

  • Females: pregnant or lactating or plans to become pregnant during the study period
  • Inability to provide informed consent and engage in informed consent procedures
  • Plans to relocate outside the study area

Recruiting US locations

  • LSU Pennington Biomedical Research Center

    Baton Rouge, LA 70808

    Site contact: Stephen Hennigar, PhD · 225-763-2612 · stephen.hennigar@pbrc.edu

  • Cornell University

    Ithaca, NY 14853

    Site contact: Kimberly O'Brien, PhD · 607-255-3743 · koo4@cornell.edu

Study contacts (from the official record)

  • Stephen Hennigar, PhD · 225-763-2612 · stephen.hennigar@pbrc.edu
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Dietary Iron Requirements (NCT07139821) | Bored Studies