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Digestive Data

Ryan Galitzdorfer

Where the gut-brain connection meets daily behavior. Research-driven guidance for people with chronic digestive conditions.

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Substack
PricingOnly free issuesPublishesWeekly
Issues39Foundeda year agoLast Issue13 days ago
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Latest Issues

The Brain Fog That Outlasts the Flare

When people think of inflammatory bowel disease, they tend to think of what happens in the digestive tract: abdominal pain, bloating, urgency, and irregular bowel movements. But the inflammatory nature of IBD extends far beyond the gut, inf...

13 days ago
9
4

FPI Update #9: What the Model Revealed

For the last five months, this series has been focused on laying out the framework for functional performance and all of the preprocessing that has come with it. In short, we’ve covered the three core layers to the system:

  1. Context: Wh...
22 days ago
7
3

The Gut Has a Data Problem

For all the attention gut health has received in recent years, the data layer underneath it is surprisingly thin. The wellness industry has built an entire category around supporting, repairing, and optimizing the gut. But the infrastructur...

a month ago
12
4

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...

a month ago
7
2

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...

2 months ago
12
2

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  • Ryan Galitzdorfer

    Exploring the connection between gut health, daily behavior, and cognition. Half research, half building the Functional Performance Index (FPI). Grounded in lived experience with chronic digestive disease.

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