Gut Microbiome Quiz: Test Your Knowledge & Improve Gut Health
Health ConditionsDigestive Health

Gut Check: Test Your Knowledge of the Gut Microbiome

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The gut does much more than just digest food. The trillions of bacteria, viruses, fungi, and other microbes that make up the gut microbiome interact with many bodily systems. Some experts even describe the gut microbiome as almost like an organ in its own right.

 To better care for your gut microbiome, it helps to get the facts about this unique community of organisms.
For starters, the gut microbiome plays a key role in digestion and immune function. Imbalances of microbes in the gut may even contribute to conditions such as inflammatory bowel disease, type 2 diabetes, obesity, and mental health disorders, among others.

 But you can support your gut microbiome in many ways, such as by eating gut-friendly foods and managing stress.

Take this quiz to test your knowledge of the gut microbiome and its role in your health.

everyday health quiz

How Much Do You Know About the Gut Microbiome?

The organisms in the gastrointestinal (GI) tract can extend influence across multiple bodily systems. So protecting your gut microbiome’s balance and diversity is crucial. Take the first small step toward improving your gut health with this quiz.
By Suzy KatzMedically reviewed by Ira Daniel Breite, MDPublished on July 29, 2026
gut-microbiome illustration
EDITORIAL SOURCES
Everyday Health follows strict sourcing guidelines to ensure the accuracy of its content, outlined in our editorial policy. We use only trustworthy sources, including peer-reviewed studies, board-certified medical experts, patients with lived experience, and information from top institutions.
Resources
  1. Gut Microbiome. Cleveland Clinic. August 18, 2023.
  2. Madhogaria B et al. Correlation between human gut microbiome and diseases. Infectious Medicine. September 2022.
Additional Sources
  • Bakr MM et al. Composition and Interactions of the Oral–Gastrointestinal Microbiome Populations During Health, Disease, and Long-Duration Space Missions: A Narrative Review. Oral. September 3, 2025.
  • Dey P et al. All That Glitters Ain’t Gold: The Myths and Scientific Realities About the Gut Microbiota. Nutrients. September 30, 2025.
  • Shen Y et al. Gut Microbiota Dysbiosis: Pathogenesis, Diseases, Prevention, and Therapy. MedComm. April 18, 2025.
  • Dysbiosis. Cleveland Clinic. April 16, 2024.
  • Sharkey KA et al. The enteric nervous system. Physiological Reviews. 2022.
  • Food as Medicine: Probiotic Foods. Children’s Hospital of Philadelphia.
  • Karahan F et al. Environmental Factors Affecting the Gut Microbiota and Their Consequences. Nature Cell and Science. 2023.