NCT07457515

Brief Summary

The prospective 5-month follow-up study will involve 150 mother-infant dyads grouped based on maternal baseline BMI category (normal weight, overweight, obesity). The investigators plan 3 study visits (1, 3, and 6 months postpartum) with analysis the following parameters and outcomes:

  1. 1.maternal anthropometry and body composition;
  2. 2.maternal dietary intake and dietary patterns (with results of biomarker-based validation);
  3. 3.maternal status of lipophilic antioxidants, selected vitamins, and fatty acids profile that may be related to adipose tissue metabolism, inflammation, and cardiometabolic status;
  4. 4.maternal metabolomics, adipokines, insulin, selected biomarkers of inflammation, altered glucose metabolism, and oxidation;
  5. 5.breastmilk composition assessed by systemic approach (macronutrients, fatty acids profile, lipophilic antioxidants, adipokines, hormones, immunological profile, and preliminary lipidomic analysis in part of the study group);
  6. 6.infant growth trajectory, body composition, urine metabolomics, and biomarkers of oxidative stress.

Trial Health

67
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
165

participants targeted

Target at P50-P75 for all trials

Timeline
40mo left

Started Feb 2026

Typical duration for all trials

Geographic Reach
2 countries

4 active sites

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress9%
Feb 2026Sep 2029

First Submitted

Initial submission to the registry

January 19, 2026

Completed
13 days until next milestone

Study Start

First participant enrolled

February 1, 2026

Completed
1 month until next milestone

First Posted

Study publicly available on registry

March 9, 2026

Completed
2.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 1, 2029

Expected
7 months until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2029

Last Updated

March 9, 2026

Status Verified

January 1, 2026

Enrollment Period

3 years

First QC Date

January 19, 2026

Last Update Submit

March 2, 2026

Conditions

Keywords

LactationBody compositionInfant developmentDietAdipokinesCarotenoidsFatty acidsMetabolomicsInflammationOxidative stressOverweightObesityTocopherols

Outcome Measures

Primary Outcomes (28)

  • Difference between groups and change from 1 to 6 months postpartum in maternal body fat percentage

    Assessment of changes in total body fat content, assessed by a bioelectrical impedance analysis (BIA) and a dual-energy X-ray absorptiometer (DXA). Results will be reported as a percentage (%).

    1, 3, and 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in maternal fat-free mass percentage

    Assessment of changes in fat-free mass, assessed by a bioelectrical impedance analysis (BIA) and a dual-energy X-ray absorptiometer (DXA). Results will be reported as a percentage (%).

    1, 3, and 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in maternal Visceral Fat Area

    Assessment of changes in visceral fat area, assessed by DXA. Results will be reported as square centimeters (cm\^2).

    1, 3, and 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in maternal Subcutaneous Fat Area

    Assessment of changes in subcutaneous fat area, assessed by DXA. Results will be reported as square centimeters (cm\^2).

    1, 3, and 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in maternal Body Mass Index (BMI)

    Weight and height will be combined to report BMI in kg/m\^2.

    1, 3, and 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in maternal Waist-Hip Ratio (WHR)

    Assessment of fat distribution calculated as the waist measurement divided by the hip measurement (dimensionless ratio).

    1, 3, and 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in maternal Waist-to-Height Ratio (WHtR)

    Assessment of fat distribution calculated as the waist measurement divided by height (dimensionless ratio).

    1, 3, and 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in metabolic syndrome (MetS) incidence

    Assessment of MetS incidences diagnosed based on the occurence of three from five metabolic abnormalities diagnosed based on International Diabetes Federation-established cut-off points for women for waist circumference (≥80 cm), fasting blood glucose (≥100 mg/dL), triglicerides (≥150 mg/dL), HDL cholesterol (\<50 mg/dL), blood pressure (systolic SBP ≥ 130 or diastolic ≥ 85 mmHg) as a marker of cardiometabolic health.

    1, 3, 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in maternal glycated haemoglobin (HbA1c)

    Assessment of changes in HbA1c (reported in %) as a marker of maternal cardiometabolic health.

    1, 3, 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in Homeostatic Model Assessment - Insulin Resistance (HOMA-IR)

    Assessment of HOMA-IR calculated as the product of fasting insulin \[µIU/mL\] and fasting glucose \[µIU/mL\] divided by 22.5 (dimensionless ratio) as an indicator of maternal cardiometabolic health.

    1, 3, 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in maternal serum leptin

    Assessment of maternal serum leptin assessed by the ELISA method as an indicator of maternal cardiometabolic health.

    1, 3, 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in maternal serum adiponectin

    Assessment of maternal serum adiponectin assessed by the ELISA method as an indicator of maternal cardiometabolic health.

    1, 3, 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in maternal serum and infant urine Retinol-Binding Protein-4 (RBP4)

    Assessment of maternal serum and infant urine RBP-4 assessed by the ELISA method as an indicator of maternal and infant cardiometabolic health.

    1, 3, 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in human milk macronutrients

    Assessment of human milk macronutrients (fat, carbohydrate, dry material, protein, true protein) concentration assessed by mid-infrared (mid-IR) transmission spectroscopy method. Results will be reported in grams per 100 mL.

    1, 3, 6 months of postpartum

  • Difference between groups and change from 1 to 6 months postpartum in human milk energy value

    Assessment of human milk energy value assessed by mid-infrared (mid-IR) transmission spectroscopy method. Results will be reported in kcal per 100 mL.

    1, 3, 6 months of postpartum

  • Difference between groups and change from 1 to 6 months postpartum in human milk secretory immunoglobulin A (S-IgA)

    Assessment of human milk S-IgA assessed by Enzyme-Linked Immunosorbent Assay (ELISA) method. Results will be reported in grams per liter \[g/L\].

    1, 3, and 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in human milk lactoferrin

    Assessment of human milk lactoferrin assessed by ELISA method. Results will be reported in grams per liter \[g/L\].

    1, 3, and 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in human milk leptin

    Assessment of human milk leptin assessed by ELISA method.

    1, 3, 6 months of postpartum

  • Difference between groups and change from 1 to 6 months postpartum in human milk adiponectin

    Assessment of human milk adiponectin assessed by ELISA method.

    1, 3, 6 months of postpartum

  • Difference between groups and change from 1 to 6 months postpartum in human milk insulin

    Assessment of human milk insulin assessed by ELISA method.

    1, 3, 6 months of postpartum

  • Difference between groups and change from 1 to 6 months postpartum in human milk High-Sensitivity C-Reactive Protein (hs-CRP)

    Assessment of human milk hsCRP assessed by ELISA method.

    1, 3, 6 months of postpartum

  • Difference between groups and change from 1 to 6 months postpartum in human milk interleukin 1 (IL-1)

    Assessment of human milk IL-1 assessed by ELISA method.

    1, 3, 6 months of postpartum

  • Difference between groups and change from 1 to 6 months postpartum in human milk interleukin 6 (IL-6)

    Assessment of human milk IL-6 assessed by ELISA method.

    1, 3, 6 months of postpartum

  • Difference between groups and change from 1 to 6 months postpartum in human milk Tumor Necrosis Factor-alpha (TNF-alfa)

    Assessment of human milk TNF-alfa assessed by ELISA method.

    1, 3, 6 months of postpartum

  • Difference between groups and change from 1 to 6 months postpartum in human milk fatty acid profile

    Assessment of human milk fatty acid profile analyzed as methyl ester (FAME) by gas chromatography. Results will be reported as concentration within a total fat \[% wt/wt\].

    1, 3, 6 months of postpartum

  • Difference between groups and the change from 1 to 6 months of life in infant anthropometric development

    Assessment of anthropometric development calculated as weight-, length-, BMI-, and head circumference z-scores for age and sex, analyzed based on WHO standards.

    1, 3, 6 months of life

  • Difference between groups and the change from 1 to 6 months of life in infant body fat-free mass percentage

    Assessment of changes in total body fat-free mass content, assessed by the whole-body DXA scans with a vacuum cushion to prevent movement. Results will be reported as a percentage (%).

    1, 6 months of life

  • Difference between groups and the change from 1 to 6 months of life in infant body fat percentage

    Assessment of changes in total body fat content, assessed by the whole-body DXA scans with a vacuum cushion to prevent movement. Results will be reported as a percentage (%).

    1, 6 months of life

Secondary Outcomes (13)

  • Difference between groups and the change from 1 to 6 months postpartum in the maternal resting metabolic rate (RMR)

    1, 3, 6 months postpartum

  • Difference between groups and the change from 1 to 6 months postpartum in maternal dietary intake

    1, 3, 6 months postpartum

  • Difference between groups and the change from 1 to 6 months postpartum in maternal dietary habits

    1, 3, 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in maternal short- and long-term fatty acid status

    1, 3, 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in maternal and human milk lipophilic antioxidants and vitamins

    1, 3, 6 months postpartum

  • +8 more secondary outcomes

Other Outcomes (7)

  • Difference between groups and change from 1 to 6 months postpartum in Bone Mineral Density (BMD)

    1, 3, 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in maternal hydration status

    1, 3, 6 months postpartum

  • Difference between groups and change from 1 to 6 months postpartum in maternal well-being

    1, 3, 6 months postpartum

  • +4 more other outcomes

Study Arms (3)

Normal weight (NW)

n=55 (maternal BMI at baseline 18.5-24.9 kg/m²)

Overweight (OW)

n=55 (maternal BMI at baseline 25-29.9 kg/m²)

Obesity (OB)

n=55 (maternal BMI at baseline \>29.9 kg/m²)

Eligibility Criteria

Age19 Years+
Sexfemale
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

A group of 165 mother-infant dyads is planned to be recruited from a community sample. The study group will be recruited via advertisements on the Internet, social media, health facilities, and information distributed to midwives and lactation consultants. To reduce bias related to the lack of random selection and increase the quality of our results, the investigators will match participants by maternal age, infant sex, and sociodemographic status - factors potentially affecting exposures and outcomes measured in our study.

You may qualify if:

  • for mother:
  • at least 19 years,
  • plan of exclusively or predominantly breastfeeding for 6 months,
  • consent to a sampling of biological material and participate in all planned procedures (for both mother and infant),
  • willingness to finish the follow-up,
  • well-understanding of the Polish language (for non-Polish nationalities); for infants:
  • month or less,
  • clinically healthy,
  • none or one formula feeding per day

You may not qualify if:

  • for mother:
  • type 1 or 2 diabetes diagnosed before pregnancy,
  • uncontrolled thyroid disease,
  • breastfeeding more than 1 child or being a milk donor,
  • tobacco/alcohol use during pregnancy or currently,
  • inability to express a sufficient amount of milk; for infants:
  • congenital disease,
  • birth from a multiple pregnancy,
  • preterm birth (\<37 Hbd).

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (4)

Food, Nutrition and Health, Uviversity of British Columbia; Affiliated Investigator, Healthy Starts, BC Children's Hospital Research Institute & Women's Health Research Institute

Vancouver, British Columbia, V6T 1Z4, Canada

Location

Wroclaw Medical University

Wroclaw, Lower Silesian Voivodeship, 50-367, Poland

Location

National Institute of Public Health NIH - National Research Institute

Warsaw, Masovian Voivodeship, 00-791, Poland

Location

Department of Human Nutrition, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (SGGW-WULS)

Warsaw, Masovian Voivodeship, 02-776, Poland

Location

Related Publications (48)

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    BACKGROUND

Biospecimen

Retention: SAMPLES WITH DNA

Maternal: * serum, * erythrocytes, * human milk, * urine, * stool, * buccal swab. Infant: * urine, * stool, * buccal swab.

MeSH Terms

Conditions

Body WeightObesityOverweightBreast FeedingInflammation

Condition Hierarchy (Ancestors)

Signs and SymptomsPathological Conditions, Signs and SymptomsOvernutritionNutrition DisordersNutritional and Metabolic DiseasesFeeding BehaviorBehaviorPathologic Processes

Central Study Contacts

Monika A. Zielinska-Pukos, PhD

CONTACT

Jadwiga Hamulka, Professor

CONTACT

Study Design

Study Type
observational
Observational Model
CASE CONTROL
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

January 19, 2026

First Posted

March 9, 2026

Study Start

February 1, 2026

Primary Completion (Estimated)

February 1, 2029

Study Completion (Estimated)

September 1, 2029

Last Updated

March 9, 2026

Record last verified: 2026-01

Locations