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TerminatedNCT02341300Updated Jul 30, 2020

Use of Cast Iron Pots to Improve Maternal Anemia

An interventional study of Cast Iron Pot and Alumnium Pot in Iron-deficiency Anemia, sponsored by Weill Medical College of Cornell University. Terminated at 1 site in United States. Open to female participants aged 18 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-07-30.

Sponsored by Weill Medical College of Cornell University · Not applicable, Interventional, and Treatment

Why this study was terminated
Original investigator has left the institution.
Phase
Not applicable
Study type
Interventional
Enrollment
34
Allocation
Randomized
Ages
18 Years to 50 Years
Sex
Female
01

Study summary

Anemia of pregnancy is defined as a hemoglobin concentration of less than 11 g/dL in the first and third trimesters, and less than 10.5 g/dL in the second trimester. The rates of anemia are variable and depend largely on preexisting iron stores and supplementation. Estimates from the World Health Organization report that 35% to 75% of pregnant women in developing countries and 18% of women from industrialized countries are anemic. Maternal anemia is associated with an increased risk of preterm birth, low birthweight, and small for gestational age infants. Many studies have shown improvement in these outcomes with maternal iron supplementation in cases of iron-deficiency anemia. Mounting evidence also indicates that maternal iron deficiency in pregnancy reduces fetal iron stores, perhaps well into the first year of life.

Anemia in pregnancy can also impact maternal morbidity and mortality. Viteri reported that anemic pregnant women are at greater risk of death during the perinatal period and that anemia is the major contributory or sole cause of death in 20-40% of the 500,000 maternal deaths per year.

The need for iron averages close to 1000mg in a typical singleton gestation. This amount considerably exceeds the iron stores of most women and will result in iron-deficiency anemia unless supplemental iron is taken. One problem with iron supplement use is compliance, secondary to adverse effects such as constipation and nausea. Research on the use of cast iron pots in decreasing the incidence of iron-deficiency anemia in non-pregnant women has been promising. These studies have demonstrated good compliance with no reported adverse effects. The aim of our study is to determine if providing anemic women in the first trimester of pregnancy with a cast iron pot will decrease the incidence of anemia later in pregnancy.

Hypothesis: Cooking in cast iron pots will increase hematocrit levels in pregnancy.

Read the detailed description

Research Question: Will the addition of cast iron pots to the standard of care (nutrition counseling, food recall, prenatal vitamin, +/- iron and vit c) improve the hematocrit of pregnant women with anemia? Study Intervention: To provide a cast iron pot to those pregnant women with anemia who are randomized to intervention group and an aluminum pot to those women in the control group. Women will be blinded to their allocation. Women with a qualifying hemoglobin will meet with our nutritionist (as they would if not enrolled in the study), and she will perform a standardized 24 hour food recall and nutrition counseling according to the standard of care, as well as perform written informed consent. The 24 hour food recall will be submitted to the manufacturer (Nutrition Quest) to calculate the baseline iron intake of each subject. Subjects will be enrolled only if they can agree to incorporate the provided pot into their cooking (in any capacity) 3x/week. Subjects will be called 1x/month and asked about the frequency of pot use over the past month as well as their compliance with iron and vitamin C supplements, if prescribed. Subjects will then also be contacted postpartum to determine satisfaction with the intervention.

Outcome measure: We will be looking at hemoglobin levels in the first, second, and third trimester as well as postpartum (which are all routinely collected labs in pregnancy). Ferritin will be added along with routine labs at approximately 19 weeks as this is often performed in the workup of anemia. No labs outside of routine maternal labs will be performed.

02

Conditions studied

  • Iron-deficiency Anemia

Keywords

  • Pregnancy
  • Cast-Iron pots
  • Iron-deficiency anemia
03

In context

Anemia

1,733 studies on the registry are indexed under Anemia; 246 are open to participants now.

This study's enrollment of 34 is below the median of 94 across 1,291 interventional studies indexed under Anemia.

Browse Anemia studies →

Lead sponsor

Weill Medical College of Cornell University is the lead sponsor of 867 studies on the registry; 160 are open to participants now.

Of its 119 completed or terminated interventional studies of FDA-regulated products, 91 (76%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 50 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes

Inclusion criteria

  • Pregnant women of any age in their first trimester of pregnancy with anemia defined as a Hemoglobin less than 11 and/or a hematocrit less than 33
  • Willingness and ability to cook in provided cast iron pot at least 3x/week
  • Singleton gestations

Exclusion criteria

Exclusion Criteria:

  • Any secondary cause of anemia including inherited and acquired hemolytic anemias (sickle cell disease, thalessemia, malaria, etc) Inability or unwillingness to try to use cast iron pot approximately 3x/week
  • Women with severe chronic illness and high likelihood of preterm birth and/or expected long-term hospitalizations during pregnancy. Multifetal gestations
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
34 participants (actual)

Study arms

  • Experimental
    Cast-Iron Pot

    The treatment arm will receive a 12 inch pre seasoned cast iron pot

    Device: Cast Iron Pot

  • Placebo comparator
    Aluminum Pot

    12 inch nonstick aluminum fry pan

    Device: Alumnium Pot

Interventions

  • DeviceCast Iron Pot

    Cast iron pot

    Also known as: Lodge L10SK3 12" Pre-Seasoned Cast Iron Skillet

  • DeviceAlumnium Pot

    Aluminum Skillet

    Also known as: Alumnium Skillet

06

What researchers measure

Primary outcomes

  1. Increased hematocrit in second and third trimesters of pregnancy

    Time frame: 28 weeks (2nd and 3rd trimesters of pregnancy)

Secondary outcomes

  1. Compliance assessment

    We will assess compliance with iron/aluminium pot use at the conclusion of the study

    Time frame: postpartum, after ~30 weeks

  2. Incidence of adverse effects

    Will contact patients to assess incidence of adverse effects of iron including constipation

    Time frame: Monthly phone surveys for 28 weeks

  3. Satisfaction

    Will contact patient monthly to assess satisfaction with study intervention

    Time frame: Monthly phone surveys for 28 weeks

  4. Maternal anemia postpartum

    Will assess subjects need for transfusion and/or symptoms of anemia (dizziness, lightheadedness) postpartum

    Time frame: postpartum, after ~30 weeks

  5. Neonatal outcomes

    Will follow up neonatal outcomes to assess for prematurity and/or low birthweight

    Time frame: postpartum, at ~30 weeks

07

Study locations

1 site
  • New York Prebyterian Hospital Weill Cornell
    New York, New York 10021, United States
08

References and documents

Individual participant data

Plan to share: Undecided — Deidentified data may be shared. No biologic specimens are being collected in this study

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 30, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02341300
Lead sponsor
Weill Medical College of Cornell University
Responsible party
Sponsor
First posted
Jan 19, 2015
Start date
Jul 15, 2020
Primary completion
Jul 15, 2020
Completion
Jul 15, 2020
Last update
Jul 30, 2020

Study contacts

Stephen Chasen, MD
principal investigator · New York Presbyterian Hospital Weill Cornell

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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