SIBO Meal Planner

Diet plays a critical supporting role in SIBO treatment, but it is not a cure on its own. The purpose of a SIBO diet is to reduce the fermentable carbohydrates available to overgrown bacteria in the small intestine, which reduces symptoms like bloating, gas, and pain while antimicrobial treatment works to eradicate the overgrowth.

The Low-FODMAP diet is the most widely used dietary framework for SIBO. FODMAP stands for Fermentable Oligosaccharides, Disaccharides, Monosaccharides, and Polyols — short-chain carbohydrates that are poorly absorbed and rapidly fermented by gut bacteria. During active treatment, a strict low-FODMAP diet eliminates high-FODMAP foods like garlic, onions, wheat, beans, high-lactose dairy, and certain fruits. This is not meant to be permanent — the goal is symptom control during the treatment window.

The Bi-Phasic Diet, developed by Dr. Nirala Jacobi, is a SIBO-specific dietary protocol that phases food reintroduction based on treatment progress. Phase 1 is highly restrictive and used during active antimicrobial treatment. Phase 2 gradually reintroduces moderate-FODMAP foods as the bacterial overgrowth resolves.

After treatment, a structured food reintroduction over 4 to 8 weeks helps you identify your personal trigger foods. Reintroduce one food group at a time, in small amounts, and wait 2-3 days to assess your reaction before trying the next. This process is critical — it allows you to eat as broadly as possible while avoiding only the specific foods that trigger your symptoms. Long-term unnecessary restriction can harm beneficial gut bacteria diversity.

Meal spacing is equally important. Space meals 4 to 5 hours apart with no snacking in between. This allows the Migrating Motor Complex (MMC) — the cleansing wave that sweeps bacteria from the small intestine — to activate during fasting periods. Constant grazing keeps the MMC suppressed and contributes to bacterial accumulation.