GI Function

The gastrointestinal (GI) tract is central to overall health, serving not only as a system for digesting and absorbing nutrients but also playing key roles in immune regulation, hormone signaling, and detoxification. GI dysfunction—whether due to inflammatory, infectious, structural, or functional causes—can lead to a broad range of symptoms and systemic consequences.

At Intercoastal Health, we utilize a functional medicine model to assess and restore gastrointestinal health. This includes a detailed history, targeted laboratory and biomarker evaluation, lifestyle analysis, and integrative treatment plans designed to uncover root causes and support long-term healing.

Gastrointestinal Function: A Functional Medicine Approach to Digestive Health

Authored by Chris McDermott, Nurse Practitioner, practicing with autonomous authority in Florida | Intercoastal Health, Florida

Background: What Is GI Dysfunction?

GI dysfunction refers to abnormalities in the structure or function of the digestive system, from the esophagus to the colon. These conditions can impair:

  • Digestive enzyme secretion
  • Nutrient breakdown and absorption
  • Gut motility and elimination
  • Microbiome balance
  • Mucosal barrier integrity
  • Immune response regulation

Dysfunction may present acutely (e.g., foodborne illness), chronically (e.g., IBS, IBD), or intermittently, often affected by stress, diet, infection, and lifestyle.

Signs and Symptoms of GI Dysfunction

Because the gastrointestinal system interfaces with nearly every major body system, symptoms can range from local digestive issues to systemic complaints:

  • Abdominal pain or cramping
  • Bloating and excessive gas
  • Constipation, diarrhea, or alternating bowel patterns
  • Nausea or vomiting
  • Acid reflux or heartburn
  • Fatigue and brain fog
  • Unintentional weight loss or gain
  • Undigested food in stool
  • Intolerance to specific foods
  • Mucus in stool or urgency with bowel movements

Diagnostic Evaluation: Functional Assessment of GI Health

A comprehensive GI evaluation involves both conventional testing and advanced biomarker analysis:

  • Medical History and Physical Examination
  • Blood-Based Biomarkers:
  • Stool Testing: Microbiome, pathogens, calprotectin
  • Breath Testing: SIBO detection
  • Endoscopy or Colonoscopy: When clinically indicated

Underlying Causes of GI Dysfunction

Root causes include:

  • Poor Diet and Food Triggers: Processed foods, low fiber
  • Infections and Dysbiosis: H. pylori, parasites
  • Chronic Stress and Gut-Brain Axis Dysfunction: Vagal nerve dysregulation
  • Autoimmune and Inflammatory Disorders: Inflammatory bowel disease (IBD)
  • Functional GI Disorders: IBS, functional dyspepsia
  • Medication Effects: Antibiotics, NSAIDs, PPIs

Clinical Conditions Associated with GI Dysfunction

GI dysfunction contributes to:

Interfering Factors in Interpretation

Testing accuracy can be affected by:

  • Recent antibiotic or probiotic use
  • Incomplete stool sampling
  • Hidden nutrient deficiencies
  • Stress-induced autonomic dysregulation

Functional Medicine Approach at Intercoastal Health

We build individualized care plans:

1. Therapeutic Nutrition

  • Anti-inflammatory, whole-food diets tailored to sensitivities
  • Low-FODMAP or autoimmune protocols when indicated

2. Microbiome Rebalancing

  • Targeted probiotics, prebiotics, and antimicrobials

3. Digestive Support

  • Pancreatic enzymes, bile salts, or betaine HCl
  • Mucosal repair nutrients like glutathione

4. Stress and Lifestyle Optimization

  • Vagal nerve support, mindfulness, breathwork

5. Ongoing Monitoring

  • Track biomarkers, symptoms, and adjust therapies as needed

Conclusion

Gastrointestinal function is foundational to health. Disruptions can manifest locally and systemically. By identifying root causes and restoring mucosal integrity and microbial balance, functional medicine offers a regenerative approach to digestive health.

In conclusion, a comprehensive evaluation by a functional medicine practitioner in Florida facilitates identification of cellular-level and molecular imbalances driving cardiometabolic dysfunction. By integrating evidence-based therapies with IV therapy and longevity medicine services—where gut health is pivotal—we offer patients a regenerative, preventive framework to rebuild resilience and optimize wellness. Call tel:(904) 799‑2531 or schedule online to request your personalized digestive health assessment.

Further Reading

Board Certified & Professional Member of

American Academy of Nurse Practitioners
Florida Association of Nurse Practitioner
The American Association of Nurse Practitioners
American Academy of Anti-Aging Medicine
International Association of Rehabilitation Professionals

Schedule your visit today!

Ready to take the next step in optimizing your health? Contact us to schedule a comprehensive functional medicine evaluation centered on whole-person care. We offer convenient in-person and telemedicine appointments. Our team is available to assist with scheduling and to ensure you receive the support and care you need.

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