Our story
It started in a clinic
From one pediatric clinic to continuous care for every family.
How we got here
Four chapters, one promise

The clinic years
Our CMO treated more than 10,000 children. The same story kept repeating: months of waiting, twenty-minute visits, families alone in between.
We built Pooficient
One app connecting what a child eats, feels, and passes. Families found it, and kept using it.
Live on the App Store- 61%
fewer painful bowel movements
2xcare plan adherence
25%fewer clinic visits
Measured in our clinical cohort.
Cited 2025Elsevier’s Gastroenterology Clinics of North America, GI clinics review.
The results
Families felt the difference. The peer-reviewed literature noticed it.

Fiber Health today
A full virtual clinic. Real clinicians, continuous care, designed to be covered by insurance.
See how it works
The team
Built by clinicians and builders

Eren Yağmurlu
Chief Executive Officer
Guided leading consumer health apps.

Aydın Yağmurlu, MD
Chief Medical Officer
Professor of pediatric surgery, 10,000+ children treated.

Yağız Efe Mertol
Chief Technology Officer
Built apps used by 10M+ people.

Bartu Şişman
Founding Engineer
AI engineer, computer vision and voice.

John M. Rosen, MD
Clinical Advisor
Board-certified pediatric gastroenterologist.
Dr. Rosen cited our work in the peer-reviewed literature before joining as advisor.
Your child’s gut, in good hands
One short call. We listen, check your coverage, and get you started.