Polyphenols and Gut Health:
The Complete Guide
The most comprehensive resource on the science of polyphenols and your digestive system — written and reviewed by board-certified gastroenterologist Dr. Ken Brown, MD. Cutting through the noise with clinical clarity.
WHY THIS MATTERS
You've Heard Polyphenols Are Good For You.
But What Do They Actually Do In Your Gut?
Polyphenols are the most abundant antioxidants in the human diet, with more than 8,000 different compounds found in fruits, vegetables, herbs, and certain plant extracts. Most of the conversation stops at “they’re good antioxidants.” But the real story is far more interesting. Polyphenols do not just neutralize free radicals. They actively shape your gut microbiome, feed beneficial bacteria, suppress harmful ones, and, when used strategically, can help target specific digestive issues at their source.
This is the library Dr. Ken Brown wishes existed when he started researching polyphenols 15 years ago. It is the foundation of his work, the science behind Atrantil, Re:flux, and Re:balance, and now your starting point.
8,000+
Distinct polyphenols identified in nature
90%
Reach the colon, where they interact with the gut microbiome
95%
Pass through the small intestine before being transformed by gut microbes
7
Polyphenols in our gut product formulas
THE LIBRARY
Explore the Polyphenol Library
9 articles published · 26 coming soon · Updated April 2026
LISTEN ON THE GO
What are Polyphenols:
A Gastroenterologist's Guide
If you're new to polyphenols, start here. Dr. Brown breaks down what polyphenols actually are, why your gut cares about them, and how they differ from probiotics, prebiotics, and other supplements you've heard about.
12 min read · Includes podcast clip · Free cheat sheet
THE ATRANTIL POLYPHENOLS
Three polyphenols. One patented formula.
Most polyphenol content stays theoretical. We get specific, because Atrantil's formula uses three carefully selected polyphenol-rich plant extracts that work together to target the small intestine. Each has a deep article exploring its mechanism, history, and clinical research.
THE SCIENCE
Recent Research
We're Tracking
The field of polyphenol research moves fast. Here are recent peer-reviewed studies shaping how we think about polyphenols and gut health.
FREE DOWNLOAD
The Polyphenol + Gut Health Handbook
Dr. Brown's complete 20-page guide covering everything from polyphenol basics to advanced gut health applications. The most comprehensive gut health resource available.
20-page PDF · Polyphenol food list · Daily action plan
COMMON QUESTIONS
Polyphenols, Frequently Asked
What Are Polyphenols, Exactly?
Polyphenols are a large family of plant compounds — over 8,000 distinct types — that act as antioxidants and play crucial roles in plant defense. When humans consume them through fruits, vegetables, tea, coffee, and certain extracts, polyphenols interact with our gut microbiome in ways that support digestive and overall health.
How Do Polyphenols Help Gut Health Specifically?
Polyphenols are a large family of plant compounds — over 8,000 distinct types — that act as antioxidants and play crucial roles in plant defense. When humans consume them through fruits, vegetables, tea, coffee, and certain extracts, polyphenols interact with our gut microbiome in ways that support digestive and overall health.
Are Polyphenol Supplements As Good As Polyphenol-Rich Foods?
Polyphenols are a large family of plant compounds — over 8,000 distinct types — that act as antioxidants and play crucial roles in plant defense. When humans consume them through fruits, vegetables, tea, coffee, and certain extracts, polyphenols interact with our gut microbiome in ways that support digestive and overall health.
What’s The Difference Between Polyphenols And Probiotics?
Polyphenols are a large family of plant compounds — over 8,000 distinct types — that act as antioxidants and play crucial roles in plant defense. When humans consume them through fruits, vegetables, tea, coffee, and certain extracts, polyphenols interact with our gut microbiome in ways that support digestive and overall health.
How Many Polyphenols Should I Consume Per Day?
Polyphenols are a large family of plant compounds — over 8,000 distinct types — that act as antioxidants and play crucial roles in plant defense. When humans consume them through fruits, vegetables, tea, coffee, and certain extracts, polyphenols interact with our gut microbiome in ways that support digestive and overall health.
Can Polyphenols Help With Bloating, IBS, Or Sibo?
Polyphenols are a large family of plant compounds — over 8,000 distinct types — that act as antioxidants and play crucial roles in plant defense. When humans consume them through fruits, vegetables, tea, coffee, and certain extracts, polyphenols interact with our gut microbiome in ways that support digestive and overall health.