Tiny Health's story begins withtwowidely different births.

Between her two kids, Cheryl Sew Hoy, had two radically different birth experiences. One presented breech and was born by C-section, but the younger sibling was born at home with the support of a midwife.

Guess which baby battled eczema and food allergies?

Cheryl’s daughter - her first baby - was born with mild eczema and needed to work through a sesame allergy after starting solids. This wasn’t a coincidence.

After reading hundreds of scientific papers....

Cheryl found ways to restore her first child’s gut microbiome health, hopefully averting chronic conditions. What she did:

While there were gut tests for adults, there weren't any specifically tailored to mom and babies needs. Then she met a microbiologist and together, they worked on an idea for one year.

With that, Tiny Health was born.

“I took charge of my own and my babies' gut health, because I knew it was fundamental for their lifelong health.”

Cheryl, Founder of Tiny Health

Introducing the first microbiome tests uniquely designed for families.

Vaginal test for mom

Your baby passes through it. Keep it healthy and low risk for pregnacy conditions.

Stool test for mom or dad

Discover if you have the microbes essential for baby’s immune system and are able to pass onto baby.

Stool test for baby

The first colonizers can tell if baby had the right start. 3m, 6m, 12m are also important biomarkers to track as their gut rapidly evolve.

Our mission:
To improve health outcomes of future generations through evidence-based insights

Built by a team who cares

Who’s on our team: microbiologists, science writers, technologists, bioinformatician, data scientist, wellness expert, lactation consultant, registered dietician, pediatric acupuncturist, and more. We have 9 babies and kids, 6 cats and 4 dogs. Collectively, we have read 1,587 scientific papers.

We’d love to hear from you about our current open positions.
View open roles

Developed with experts in early-life microbiome health

Taylor K. Soderborg, MD, PhD

Taylor K. Soderborg, MD, PhD. Tiny Health Medical Director

Ruben Mars, PhD
Founding Advisor

Assistant Professor of Medicine, Center for Individualized Medicine Microbiome Program, Mayo Clinic, Rochester, MN

Nicole Calloway Rankins, MD, MPH
Medical Advisor

Medical Advisor; Practicing OB/GYN Hospitalist Physician, Creator and Host of The All About Pregnancy & Birth Podcast

Dr. Kim Green, MD
Medical Advisor

Associate Clinical Professor, UCSF; Pediatrician and former Chief Innovation Officer, Kaiser Permanente

Noel Mueller, PhD
Scientific Advisor

Associate Professor of Epidemiology, Johns Hopkins University

Rodney Dietert, PhD
Scientific Advisor

Professor Emeritus of Microbiology & Immunology, Cornell University

Elisabeth Bik, PhD
Scientific Advisor

Founder of Microbiome Digest; Former Research Associate at The Relman Lab, Stanford University

Joel Warsh, MD
Medical Advisor

Board-Certified Pediatrician, Creator of Raising Amazing Podcast

Meghan Azad, PhD
Scientific Advisor

Associate Professor of Pediatrics and Child Health at the University of Manitoba; Co-Director, Manitoba Interdisciplinary Lactation Center (MILC); Deputy Director, CHILD Cohort Study

See all advisors
Taylor K. Soderborg, MD, PhD

Taylor K. Soderborg, MD, PhD. Tiny Health Medical Director

Ruben Mars, PhD
Founding Advisor

Assistant Professor of Medicine, Center for Individualized Medicine Microbiome Program, Mayo Clinic, Rochester, MN

Nicole Calloway Rankins, MD, MPH
Medical Advisor

Medical Advisor; Practicing OB/GYN Hospitalist Physician, Creator and Host of The All About Pregnancy & Birth Podcast

Dr. Kim Green, MD
Medical Advisor

Associate Clinical Professor, UCSF; Pediatrician and former Chief Innovation Officer, Kaiser Permanente

Noel Mueller, PhD
Scientific Advisor

Associate Professor of Epidemiology, Johns Hopkins University

Rodney Dietert, PhD
Scientific Advisor

Professor Emeritus of Microbiology & Immunology, Cornell University

See all advisors