
IBS is classified based on predominant bowel patterns. Each subtype requires a tailored approach to identify underlying causes and develop effective treatment strategies.
| Type | Primary Pattern | Common Symptoms | Considerations |
|---|---|---|---|
| IBS-D (Diarrhea-Predominant) | Loose, frequent stools | Urgency, abdominal cramping, frequent bowel movements | Often linked to bacterial overgrowth, food sensitivities, or bile acid malabsorption |
| IBS-C (Constipation-Predominant) | Infrequent, hard stools | Straining, bloating, feeling of incomplete evacuation | May involve motility issues, methane-producing gut bacteria, or pelvic floor dysfunction |
| IBS-M (Mixed Pattern) | Alternating diarrhea and constipation | Variable symptoms, unpredictable patterns | Requires comprehensive evaluation for multiple underlying triggers |
| IBS-U (Unclassified) | Insufficient criteria for other subtypes | Inconsistent bowel patterns | Often benefits from detailed symptom tracking and functional testing |

Accurate diagnosis means looking beyond surface symptoms to uncover root causes. At Whole Gut Health, we do a deep dive and a comprehensive root cause approach to identify the underlying conditions often misdiagnosed as IBS.
Testing options may include:
We customize testing protocols based on your unique symptom pattern and medical history to ensure we identify all contributing factors.

Our Three-Phase IBS Protocol Includes:
1. Assessment and Root-Cause Identification
2. Targeted Intervention
3. Rebuilding and Prevention

Dr. Alexandra Shustina, NYC’s and Miami’s premier gut health specialist doctor is a board-certified gastroenterologist and internist. She is a gut health specialist with training in conventional gastroenterology and functional gut health. She is an expert in the gut microbiome and its role in health and wellness.
At Whole Gut Health, our care is led by an an experienced functional medicine team with a deep understanding of the gut microbiome and advanced diagnostics. We combine evidence-based strategies from conventional gastroenterology with a functional and integrative lens to give you the clarity and support needed for long-term healing.
IBS (Irritable Bowel Syndrome) is a functional gastrointestinal disorder characterized by chronic abdominal pain and altered bowel habits without structural abnormalities. As a disorder of gut-brain interaction, it involves complex communication between your digestive system, stress, nutrition, and old emotional traumas
IBS-D (Diarrhea-Predominant)
IBS-C (Constipation-Predominant)
IBS-M (Mixed Pattern)
IBS-U (Unclassified)
Accurate diagnosis of the root causes of IBS means looking beyond surface symptoms.
SIBO Breath Testing
Applied Kinesiology also known as muscle testing. It is used to determine root causes and triggers. Applied Kinesiology allows a for a much broader ability to determine root causes than laboratory tests.
Osteopathic Visceral Evaluation assesses physical restrictions, symmetry, and subtle motions of the internal organs. This provides information on the function of the organs as well as their associated meridians.
Comprehensive Stool Analysis
Organic Acids Testing
Functional Lab Work
Testing protocols are customized based on your unique symptom pattern and medical history.
Phase 1: Assessment and Root-Cause Identification
Phase 2: Targeted Intervention
Phase 3: Rebuilding and Prevention
Each IBS subtype requires a tailored approach to identify underlying causes and develop effective treatment strategies. For example:
IBS symptoms can return if underlying root causes aren't fully addressed. This is why our protocol includes a comprehensive rebuilding and prevention phase that focuses on:
At Whole Gut Health, we go beyond symptom management to identify and treat the true root causes of IBS. We combine evidence-based strategies from conventional gastroenterology with a functional and integrative approach, focusing on:
Dr. Alexandra Shustina is a board-certified gastroenterologist and internist who serves as NYC's and Miami's premier gut health specialist. She has training in both conventional gastroenterology and functional gut health, with expertise in the gut microbiome and its role in health and wellness.
The first step is scheduling a comprehensive consultation where we'll:
Contact our office to schedule your initial consultation and begin your journey toward lasting digestive wellness.
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