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Zinc and Iron Absorption From Common Beans in Young Adult Women

University of California, Davis · NCT06327529

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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 19–24 · Women only
Healthy volunteers
Accepted
Study type
Interventional · Not applicable
Target enrollment
15
US sites recruiting
1
Study start
May 1, 2024
Record last updated
February 20, 2026

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

What the study is about

Fifteen female study participants will be enrolled in a randomized crossover study to measure fractional and total zinc and iron absorption from four common bean (Phaseolus vulgaris) varieties with varying phytate and polyphenolic contents. Phytate, the storage form of phosphorus in plants, and polyphenols, which contribute to the varied colors of common beans, are natural components of the beans and can reduce zinc and iron bioavailability from these foods.

Being studied: SER 118; LMP 1001; LPA 586; KAT B1

Conditions: Zinc Absorption; Iron Absorption

Eligibility criteria

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

Show full criteria

Inclusion Criteria

  • Healthy eumenorrheic (regular monthly menstrual cycles of 25-30-days in length)
  • BMI 18.5 - 30 kg/m2
  • Regular consumer of beans, i.e. ≥ 4 servings per month
  • Usual iron intake estimated by Food Frequency Questionnaire to be less than the Recommended Daily Allowance (RDA) of 18 mg/d (8)
  • Subject is willing and able to comply with the study protocols.
  • Subject is willing to participate in all study procedures.

Exclusion Criteria

  • Dislike or allergy to beans
  • Self-reported current or recent pregnancy (within the past 12 months)
  • Self-reported recent termination of pregnancy (3 months if abortion in 1st or 2nd trimester, or 12 months if in 3rd trimester)
  • Self-reported plans to become pregnant during the study period
  • Self-reported cancer
  • Self-reported surgery without the past 12 months
  • Currently taking prescription drugs, other than for contraception, or any nutritional supplements
  • Any daily iron supplementation within the past 12 months.
  • Currently breastfeeding
  • Any medical conditions affecting iron or zinc metabolism (such as hemochromatosis or sickle cell disease)

Recruiting US locations

  • Department of Nutrition

    Davis, CA 95616

    Site contact: Roberta R Holt, PhD · 530-752-4950 · rrholt@ucdavis.edu

Study contacts (from the official record)

  • Roberta R Holt, PhD · 530-400-5952 · rrholt@ucdavis.edu
All healthy volunteers studies in California →
Zinc and Iron Absorption From Common Beans in Young Adult Women (NCT06327529) | Bored Studies