Clinical trial Recruiting at 3 sites Interventional Ages 18 and up Women only

Exploring how body fat affects iron supplement response during pregnancy

Official title: Impact of Maternal Adiposity on Maternal Iron Status and Requirements: a Randomised Intervention Study

Run by University of Ulster · NCT06425796 · Data updated 2026-11-12

This study is testing how body fat affects how well iron supplements work for pregnant women to see if it impacts their health and their baby's health.

Quick facts

Study typeInterventional
Ages18 Years and up
SexWomen only
Enrollment312 (estimated)
SponsorUniversity of Ulster
Academic / other
Locations3 sites (Coleraine, Co Londonderry and 2 other locations)
StatusRecruiting
StartedMay 20, 2024
Main results expectedJanuary 19, 2027
Study endsMarch 19, 2027
Registry record updatedJuly 1, 2026
Trial IDNCT06425796 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are pregnant women aged 18 years and older with a BMI of 18.5 kg/m2 or higher and without current pregnancy complications.

Probably not a fit

Patients with existing anemia, high risk of iron overload, or those with certain medical histories may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the impact of maternal adiposity on the effectiveness of daily iron supplementation during pregnancy. A total of 312 pregnant women will be randomly assigned to receive either 25 or 50 mg of iron supplements from 12 weeks of pregnancy until delivery. Blood samples will be collected at various stages of pregnancy to assess iron levels and other health markers. The study aims to understand how body fat influences iron absorption and overall maternal and neonatal health outcomes.

Why it matters

Potential benefit: If successful, this study could lead to improved iron supplementation strategies for pregnant women, enhancing maternal and neonatal health.

How similar studies have gone: Other studies have shown varying success in understanding the relationship between body fat and iron supplementation, but this specific approach is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:- Pregnant women

* Age ≥ 18 years
* BMI ≥18.5 kg/m2
* Without current pregnancy complications (for example, severe bleeding, Diabetes Mellitus, hyperemesis gravidarum, ectopic and molar pregnancies)
* At least 12 Gestational Week
* Singleton pregnancy confirmed with the first ultrasound scan
* Participants who are currently taking multivitamins will be included. They will be asked to discontinue any current supplementation.

Exclusion Criteria:

* Hb \<110 g/L
* SF \<30 μg/L
* High risk of iron overload (Hb \>150 g/L, transferrin saturation \>45% or SF\> 150 μg/L)
* Participants with history of haematological, renal, liver, autoimmune disorders, malabsorptive syndromes
* Participants with history of bariatric surgery
* Participants who take steroids or anti-inflammatory treatments or drugs that affect gut absorption (proton-pump inhibitors)
* Planned home births
* Participants currently involved in another research study
* Multiple pregnancy
* Participants who do not speak English

Where it's running

  • Causeway Hospital
    Coleraine, Co Londonderry, United Kingdom
    Recruiting
  • Causeway Hospital
    Coleraine, Co. Londonderry, United Kingdom
    Recruiting
  • Ulster University,Human Intervention Studies Unit,
    Coleraine, Co. Londonderry, United Kingdom
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.