Optimal - The Blog
August 10, 2026
Discover how an imbalanced gut microbiome can impact digestion and overall health, and learn about the signs and tests related to dysbiosis.
Your gut microbiome influences many aspects of health, and an imbalance can affect the body throughout.
The trillions of bacteria living in the digestive tract help digest food, produce important nutrients, support the immune system, and communicate with other organs. When this community becomes imbalanced—a condition called dysbiosis—it may affect much more than digestion.
What Is Dysbiosis?
Dysbiosis occurs when the balance of microorganisms in the gut changes. This can happen when beneficial bacteria decrease, potentially harmful bacteria grow in excess, or overall microbial diversity is reduced.
Common factors that may contribute include:
- A diet high in ultra-processed foods
- Frequent antibiotic use
- Chronic stress
- Poor sleep
- Certain medications
- Digestive disorders
Signs of an Unhealthy Gut
Symptoms vary from person to person, but may include:
- Bloating and gas
- Diarrhea
- Fatigue
- Frequent infections
- Food sensitivities
- Unexplained nutrient deficiencies
Can Blood Tests Provide Clues?
Blood tests cannot diagnose dysbiosis, but they may reveal signs that the body is responding to changes in gut health. Certain blood markers may suggest inflammation or immune activation that can occur alongside an unhealthy gut.
Healthcare providers sometimes combine blood test results with symptoms, medical history, and stool testing to better understand digestive health.
A healthy gut microbiome supports digestion, immunity, metabolism, and overall well-being. While blood tests do not directly measure the microbiome, they can provide clues about how changes in gut health may affect the rest of the body.
Want to Learn More?
OPTIMAL DX MEMBERS CLICK HERE to learn more about Dysbiosis biomarker patterns, health consequences, etc.
