Califormula Study: Calibrated Formula Feeding to Optimize Infant Growth

  • End date
    Jan 2, 2023
  • participants needed
  • sponsor
    Milton S. Hershey Medical Center
Updated on 21 March 2022
Accepts healthy volunteers


The purpose of this voluntary research study is to determine if calibrated formula feeding recommendations can promote optimal growth for the first 6 months after birth for mothers with a pre-pregnancy body mass index of 25 or more.


This pilot study seeks to determine if formula feeding recommendations that are calibrated using age and weight specific caloric intake recommendations can prevent excessive infant weight gain and reduce overweight in the first 6 months after birth among infants born to mothers with overweight prior to pregnancy electing to exclusively formula feed their infants. Calibrated formula feeding refers to adjusting the recommended daily caloric formula intake to account for weight status. A cohort of 60 infants will be recruited and randomized 2-3 weeks after birth to an intervention arm characterized by calibrated formula feeding recommendations or a control group with ad lib feeds as per usual care. Intervention group parents will also be given written instructions on infant hunger and satiety cues as well as copies of videos with guidance on bottle feeding and how to soothe fussy infants without feeding. The investigators hypothesize that the calibrated formula intake intervention will reduce rapid infant gain and overweight during infancy resulting in lower weight-for-length at age 6 months.

Condition Overweight and Obesity
Treatment Intervention
Clinical Study IdentifierNCT05104073
SponsorMilton S. Hershey Medical Center
Last Modified on21 March 2022


Yes No Not Sure

Inclusion Criteria

Term or Early Term (≥37 weeks), singleton infants
Infant birthweight ≥50th percentile based on the 2013 Fenton Growth Charts (which account for sex of child and gestational age at birth)
Infant without substantial neonatal morbidity that would affect feeding or weight gain (e.g. known chromosomal abnormality, metabolic disorder, cleft lip/palate, etc.)
Infant age ≤1 month
Mothers with pre-pregnancy body mass index ≥25 kg/m2
Mothers ≥18 years old
Parental plan to exclusively feed infant 19-20 kcal/ounce formula upon delivery or by the start of the intervention period ~1 month after delivery
Parental intention to have infant well child visits through age 6 months at a Division of Academic General Pediatrics practice site (Hope Drive, Elizabethtown, Nyes Road)
English speaking parent

Exclusion Criteria

Infants who weigh less than their birthweight 21 days after delivery
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