Digestive Data
Ryan GalitzdorferWhere daily function meets data. Personalizing the behavioral changes that most improve how people feel and perform.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 36 | Founded | a year ago | Last Issue | 6 days ago |
| Active | |||||
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digestivedata.substack.comLatest Issues
FPI Update #8: The Last Three Driver Domains
As preprocessing wraps up, I wanted to finish with the three driver domains people understand most intuitively: physical activity, sleep, and substance use. Together with nutrition, these form the behavioral foundation the FPI draws recomme...
The Functional Medicine Boom
Picture two people sitting in the same waiting room. Both have IBD. Both are about to receive dietary guidance grounded in the same clinical literature, developed from the same evidence base, delivered with the same confidence.
One of them...
FPI Update #7: The Foundation for Stratification
One of the core ideas behind the Functional Performance Index is that not everyone should be compared against the same standard. Before the model can identify which behaviors are most associated with the outcomes people experience everyday,...
The Missing Model in Gut Health
For years, the gut-brain connection lived in the gray zone between intuition and science. Feeling the “butterflies” before a big presentation. Mental flatness that follows a flareup. Fatigue and poor concentration after a huge meal. Easy to...
FPI Update #6: Finalizing the Outcome Layer
Over the last three months, this series has been building toward a personalized behavioral health system. The goal is to build an algorithm capable of identifying the top changes people can naturally make to improve how they feel compared t...
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Authors
The writers behind this newsletter.
Building a behavioral health system that identifies what most improves how people feel, function, and perform. Grounded in lived experience and a belief in personalized, data-driven insight.
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