Regular Consumption of High Phytate Reduces Inhibitory Effect of Phytate on Iron Absorption
- Conditions
- Iron Bioavailability
- Registration Number
- NCT02370940
- Lead Sponsor
- Iowa State University
- Brief Summary
The purpose of this study is to investigate whether regular consumption of phytate dampens its negative effect on nonheme iron absorption.
- Detailed Description
Phytate is one of the main inhibitors of nonheme iron absorption. High phytate consumption is of concern in developing countries because of the high prevalence of iron and zinc deficiency in these countries. In this study, we investigated the effect of habitual consumption of a high phytate diet on the inhibitory effect of phytate on nonheme iron absorption. Thirty-two non-anemic female subjects with ferritin ≤ 30µg/L were randomized into two groups, after matching for ferritin concentration. Each group consumed either high or low phytate foods that were provided for 8 wk. Iron bioavailability from a high phytate test meal was measured using area under the curve (AUC) for serum iron at baseline and after the intervention.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- Female
- Target Recruitment
- 32
- Marginal iron status (Serum ferritin <30ug/L)
- BMI in the range 18.5-24.9kg/m2
- Willing to modify diet to increase or decrease phytate intake
- Willing to give multiple blood samples at beginning and end of study
- Pregnant
- Lactating
- Smoker
- Anemic (hemoglobin <120 g/L)
- Has gastro-intestinal disease/condition that can affect absorption
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Primary Outcome Measures
Name Time Method Area under the curve for serum iron for assessing bioavailability 8 weeks
- Secondary Outcome Measures
Name Time Method