Infant Feeding & Early Development Puberty (IFED-2) Study

The more we know, the stronger babies will grow!

About IFED-2

Remember IFED?

The Infant Feeding and Early Development (IFED) study was a research study at The Children's Hospital of Philadelphia that looked at how healthy babies developed and grew during infancy. Mothers joined the IFED study right after giving birth and completed study visits at the Children's Hospital of Philadelphia with their newborn until the baby was 7 or 8 months old. Thanks to the families that participated in IFED, we were able to learn about how healthy babies grow and develop during infancy, including how different feeding methods affect early development.

Now we are reaching out to IFED participants to invite them to join a follow-up study to learn if what babies eat and how they grow and develop during infancy are related to growth and development during late childhood and early adolescence, including the timing of puberty.

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What is the Infant Feeding & Early Development Puberty (IFED-2) Study?

The IFED Puberty Study (IFED-2) is a research study that will look at how infants in the original IFED study are developing into adolescence. We will learn how different aspects of infancy, such as what babies eat and how they grow, affect growth, puberty, and hormonal changes into adolescence.

Taking part in this study will help us understand why some kids go through puberty earlier or later than others.

Participants will be asked to complete study activities remotely 3 times over the course of about a year (enrollment, 6 months, 1 year) to provide information on growth and development.

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Who is conducting the IFED-2 Study?

National Institute of Environmental Health Sciences (NIEHS) and DLH are working together on this study.

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IFED-2 Research Team


NIEHS Research Scientists

  • Dale Sandler, Ph.D.
    IFED-2 Principal Investigator
  • Mandy Goldberg, Ph.D.
    IFED-2 Co-Principal Investigator

IFED-2 Staff, DLH Coordinating Center

  • Tiffany Butler, MPH
    IFED-2 Study: Study Coordinator
  • Marley Vil, MPH
    IFED-2 Study: Research Assistant

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