At-the-Breast Vs. Expressed Human Milk: Genesis of Infant Nutrition (BEGIN)

University of Rochester

Status: Enrolling

Conditions: Exclusive Breastfeeding; Breast Feeding

Study type: Observational

Funder types: Other; NIH

Identifiers

NCT06691932

R01HD112363 (U.S. NIH Grant/Contract)

STUDY00007528

Details and patient eligibility

About

The purpose of this study is to define human milk (HM) as an ecosystem which investigators will then combine into temporal models of milk dynamics to accurately describe HM chronobiology. This study addresses 4 crucial public health gaps: 1) how breast milk changes over time and over the day, 2) how milk dynamics are related to infant sleep patterns, 3) how milk dynamics are related to infant microbiome dynamics, and 4) how all these relationships differ between infants fed directly at-the-breast vs pumped milk. These fundamental insights have been unknown until now, so that families who feed pumped breast milk are completely underserved. These results are critical to optimizing infant feeding and health outcomes for all infants receiving breast milk.

Enrollment: 240 estimated patients

Sex: All

Ages: Under 40 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Lactating mothers between 20-40 years old at enrollment

  o 120 mother/infant dyads who primarily feed HM ATB (average >75% of feeds,

• pumping no more than one time per day)

  o 120 mother/infant dyads who predominantly feed expressed HM (average >75% of feeds)

• All races and ethnicities may enroll

• Singleton infant delivered after 37 weeks

• Infant between the ages of 0-1 months at the time of enrollment.

• No serious health complications in mother or infant

Exclusion criteria

• Non-English-speaking subjects as study personnel only speak English
• Lactating moms who will be feeding both ATB and expressed HM (over 25% of the time in either feeding mode)
• Infant supplementation with formula ≥10 oz before sample collections begin, and/or no more than 16 oz during active participation/ sample collections.

Trial design

240 participants in 2 patient groups

Mothers primarily feeding their baby expressed HM (Express Group)

Mothers primarily feeding their baby directly at-the-breast (ATB Group)