Iron Bioavailability From MyPyramid Menus

This study will measure nonheme iron absorption from each of the 7 daily MyPyramid menus. Such measurements will confirm whether modifications are needed to meet dietary iron recommendations and will provide data useful for validation algorithms to calculate dietary iron bioavailability.

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Key information

Conditions

Nonheme Iron Absorption

Age range

21 year–50 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

USDA Grand Forks Human Nutrition Research Center

Grand Forks, North Dakota, 58202, United States

About this study

Nonheme iron absorption is measured with 59Fe tracer added to a 1-day menu, with iron retention detected two weeks later in a whole body scintillation counter. Each subject has iron absorption measured from each of 7 1-d menus formulated to meet the US dietary guidelines (MyPyramid menus), with the order of menus randomly assigned. Each subject participates for 14 wk to test all 7 menus.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Women 21 to 50 years old

Exclusion criteria

Anemia,
High blood pressure,
Disorders affecting iron absorption or retention,
Underlying medical conditions,
Taking medication other than birth control pills or hormone replacement therapy,
Pregnancy,
Daily use of analgesics

Treatment and study plan

My Pyramid menu days 1, 2, 3, 4, 5, 6 or 7

Behavioral

Iron absorption measured from one of seven different menus fed for 1 day each, in randomized order for each subject, with feedings separated by 2 weeks

Primary outcomes

Nonheme Iron Absorption

Time frame: 2 weeks (wks)

Absorption was estimated from whole body retention of a Iron-59 radiotracer, 2 weeks after consuming a menu labeled with the isotope, then normalized to a ferritin of 15 nanogram/milliLiter (ng/mL)

Sponsors and collaborators

Lead sponsor

USDA Grand Forks Human Nutrition Research Center

Fed

Registry information

Important dates

Study start: 2007
Primary completion: 2008
Study completion: 2008
First posted: Sep 17, 2008
Registry last updated: Jul 2, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.