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Zinc and Iron Absorption From Common Beans in Young Adult Women
Who can join
Ages 19 to 24 · Women · Healthy volunteers welcome
Full eligibility 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)
About the study
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.
What is being tested
- SER 118 (other)
- LMP 1001 (other)
- LPA 586 (other)
- KAT B1 (other)
Sponsor: University of California, Davis · Participants: 15 · Started: May 1, 2024
Contact the study team
- Roberta R Holt, PhD · Phone: 530-400-5952
Official record on ClinicalTrials.gov — NCT06327529
Locations in the U.S.
| California | Department of Nutrition, Davis |
From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.