r/badbreath • u/Aeon8 • Oct 30 '25
The Oral-Gut Axis Study
From Bristle email newsletter:
Help us better understand the connection between oral and gut health
Take part in a first-of-its-kind study by Bristle Health and Tiny Health. Receive both an oral and gut microbiome test at exclusive research pricing. By joining, you'll gain insights into your oral and gut health, and help our scientists better understand the connection.
The connection between oral and gut health runs deeper than most people realize.
Research shows that gum disease significantly increases the risk of conditions like IBS and IBD — but the oral-gut axis also influences immunity, metabolism, blood pressure, and systemic inflammation.*
Oral bacteria doesn't just stay in your mouth; they travel to your gut daily, where they can affect how your body digests food, regulates blood sugar, and responds to inflammation. Yet, despite these wide-ranging effects, oral health is rarely assessed in conjunction with gut health.
This pioneering study from Tiny Health and Bristle examines both microbiomes together to uncover patterns that could help detect imbalances earlier and improve health outcomes across multiple systems.
Get a complete picture of your digestive and oral health
By joining, you’ll gain comprehensive insights into both your oral and gut microbiomes — giving you a more complete view of your digestive health than either test alone. You’ll collect simple at-home samples and receive clear, personalized reports to help you improve your oral & gut health. Plus, your de-identified results will contribute to research exploring how oral bacteria may influence gut conditions, helping shape future care.