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Johns Hopkins Fetal Development Project

The Johns Hopkins Fetal Development Project began in 1991. Over the past 20 years more than 900 maternal-fetal pairs have participated in one of our studies.

Our oldest “babies” are now in college and our youngest ones have not been born yet. Over one hundred of you, fondly known as our “frequent flyers” have participated two or three times with successive pregnancies. But whether you are a new or longtime participant, getting to know each of you (and assorted husbands, partners, grandmothers, grandfathers, children, and on occasion, pets) has been the most fulfilling part of our jobs.

You and your babies are famous!

Since the study started, Janet and Kathleen have talked about this work in many interviews for newspapers, magazines, and documentaries.  These include the Diane Rehm show (twice), a chapter in Annie Murphy Paul’s book “Origins: How the Nine Months Before Birth Shape the Rest of Our Lives”, we are mentioned in Jena Pincott's book "Do Chocolate Lovers Have Sweeter Babies?" and Anahad O'Connor's "Always Follow the Elephants". We are also in a BBC documentary and American Baby Magazine! 

If you are a current or past participant, please check out more detailed descriptions of our studies in the links on the left.

You can download all of our publications based on your child’s birth date or view our newsletter that includes some fun and interesting things we’ve found over the years.  And please check back to see papers on our most recent cohorts and our all cohorts follow-up.

Johns Hopkins Fetal Development Project

 Fun Facts about our study babies


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