
It starts with just one poopy diaper.
tiniest Biome™ is an online platform and service that provides a look into your baby’s microbiome through the contents of their used diaper.
Microbiome of opportunity
The first three years of life are critical for establishing a healthy microbiome. During this time, microbes enter and settle in our gut, laying the foundation for our future health. By age three, these microbes become stable and almost impossible to change. The early settling microbes are essential because they help us maintain a healthy weight, improve our cognitive function, and fortify our immune system. After the age of three, the microbiome becomes resistant to change, making it essential to prioritize your baby's microbiome development now while there is still time to make a healthy impact.
Insights with a positive impact
Our lab analyzes the poop in your baby’s diaper to paint a clear picture of where their microbiome health is currently.
Meet our experts
Rachel Singer, MD, FAAP
Pediatrician
Dr. Rachel Singer is a pediatrician based in Florida. During her Pediatric Residency at Tulane University in New Orleans, Louisiana, she also trained in Culinary Medicine as part of the Certified Culinary Medicine Specialist Program. She obtained her medical degree from the Technion-Israel Institute of Technology in Haifa, Israel, and her Bachelor of Science specializing in Immunology and Infection at the University of Alberta.

Leigh A. Frame, Ph.D.
Microbiome and Healthcare Researcher
Dr. Leigh Frame is the Director of Integrative Medicine at the George Washington University School of Medicine and Health Sciences, as well as the co-founder and Chief Medical Officer of Recondite Consulting. She brings nutrition and immunity together through clinical and translational research. Dr. Frame is a double graduate of the prestigious Johns Hopkins Bloomberg School of Public Health in Baltimore, MD, where she earned a Master of Health Science in Molecular Microbiology and Immunology and a Doctor of Philosophy in International Health: Human Nutrition. In 2021, the International Forum for Advanced Healthcare named her among the Top 100 Health Care Leaders.

Audrey Fleck, MS, RDN
Registered Dietitian and Nutritionist
Audrey Fleck is a registered and licensed dietitian nutritionist based in Bucks County, Pennsylvania where she provides integrative and functional nutritional services for digestive healing in her private practice. Her approach is focused on the connection between the brain, gut, and hormonal system and is centered on healing with diet, lifestyle, botanical medicine, environmental inputs, and more. Audrey obtained her Master of Science in Human Nutrition and Functional Medicine from the University of Western States in Portland, Oregon, and her Bachelor of Science in Nutrition and Dietetics from West Chester University in West Chester, Pennsylvania.

Our Mission
We are here to encourage and empower parents with the insight necessary to give their babies the best start possible.
Our Values
Balance and Diversity
There is no such thing as good vs. bad microbes. A healthy tummy flourishes when there is a balance of diversity.
Fuss-Free Convenience
No vials, swabs, or messes involved — really. Just send the entire poopy diaper as is and our lab will take care of the rest.
Ease and Accessibility
We provide a look into your baby’s microbiome which yields possible insights into your baby's development. Making it simple for you to possibly make a positive impact on your child's microbiome that will stay with them for life.
Brought to you by
TerraCycle Discovery™ transforms the discarded products people use every day into key insights and useful recommendations.