
The Fast Tract Diet is a science-based approach to help individuals identify and reduce foods that contribute to digestive symptoms. The diet is rooted in food chemistry, microbiology, and human physiology, and offers a structured system for making informed dietary choices that support digestive health and long-term symptom relief. The diet distinguishes between easily digestible, gut-friendly foods and those more likely to cause excess fermentation in the small and/or large intestine, which can contribute to symptoms like gas, bloating, abdominal pain, diarrhoea, and constipation. The Fast Tract Diet was created by Dr. Norm Robillard, a leading gut health expert and founder of the Digestive Health Institute.
| Characteristics | Values |
|---|---|
| Goal | To improve digestive health and reduce symptom recurrence over the long term |
| Approach | Science-based, practical approach |
| Focus | Food chemistry, microbiology, and human physiology |
| Dietary choices | Distinguishes between easily digestible, gut-friendly foods and those more likely to cause excess fermentation in the small and/or large intestine |
| Fermentation Potential (FP) | A scientifically derived metric that estimates how likely a food is to ferment in the gut and trigger symptoms |
| FP System | A flexible system that empowers individuals to tailor their food choices while maintaining dietary variety and enjoyment |
| Diet type | Drug- and antibiotic-free strategy |
| Target audience | Individuals dealing with SIBO and a wide range of digestive and other health conditions |
| Resources | Fast Tract Diet mobile app, Fast Tract Digestion books |
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What You'll Learn
- The Fast Tract Diet is a science-based, practical approach to help individuals identify and reduce foods that contribute to digestive symptoms
- The diet distinguishes between easily digestible, gut-friendly foods and those that cause excess fermentation in the intestine
- The diet is based on the innovative Fermentation Potential (FP) system, which estimates how likely a food is to ferment in the gut and trigger symptoms
- The Fast Tract Diet is designed for individuals dealing with SIBO and a wide range of digestive and other health conditions
- The diet does not focus on testing but has a three-pillar approach – limit the amount of all five types of fermentable carbohydrates that are hard to digest

The Fast Tract Diet is a science-based, practical approach to help individuals identify and reduce foods that contribute to digestive symptoms
The Fast Tract Diet is a science-based, practical approach to improving digestive health and reducing digestive symptoms over the long term. It is rooted in food chemistry, microbiology, and human physiology, and offers a structured system for making informed dietary choices.
The diet is centred around the innovative Fermentation Potential (FP) system, a scientifically derived metric that estimates how likely a food is to ferment in the gut and trigger symptoms. FP is a point system that empowers individuals to make their own food choices while maintaining dietary variety and enjoyment. The Fast Tract Digestion books list the FP or symptom potential for over 350 common foods, including 60 vegetables, and also give daily allowances of FP as part of a complete dietary solution.
The diet distinguishes between easily digestible, gut-friendly foods and those more likely to cause excess fermentation in the small and/or large intestine, which can contribute to symptoms like gas, bloating, abdominal pain, diarrhoea, constipation, pressure, and reflux. This fermentation process plays a central role in various digestive disorders, including Irritable Bowel Syndrome (IBS) and Small Intestinal Bacterial Overgrowth (SIBO).
The Fast Tract Diet for SIBO is designed specifically for this condition, limiting all five types of fermentable carbohydrates that can be hard to digest, such as lactose, fructose, sorbitol, xylitol, and mannitol. The diet does not focus heavily on testing but instead takes a three-pillar approach to limiting these carbohydrates, which feed gut bacteria.
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The diet distinguishes between easily digestible, gut-friendly foods and those that cause excess fermentation in the intestine
The Fast Tract Diet is a science-based approach to help individuals identify and reduce foods that contribute to digestive symptoms. It is rooted in food chemistry, microbiology, and human physiology, offering a structured system for making informed dietary choices that support digestive health and long-term symptom relief.
The diet distinguishes between foods that are easily digestible and gut-friendly, and those that are more likely to cause excess fermentation in the small and/or large intestine. This fermentation process is a key contributor to symptoms such as gas, bloating, abdominal pain, diarrhoea, constipation, pressure, and reflux. By limiting foods that cause excess fermentation, the diet aims to reduce these uncomfortable symptoms.
Fermentable carbohydrates, such as lactose, fructose, sorbitol, xylitol, and mannitol, are hard to digest and can feed the bacteria in the gut, leading to an overgrowth of bacteria and digestive issues. The diet focuses on limiting these types of carbohydrates to reduce the fuel source for the bacteria. Additionally, the diet includes pro-digestion behaviours and practices to optimise digestion and address any underlying causes of digestive symptoms.
The innovative Fermentation Potential (FP) system is at the core of the Fast Tract Diet. FP is a scientifically derived metric that estimates how likely a food is to ferment in the gut and trigger symptoms. The FP system allows individuals to tailor their food choices while maintaining dietary variety and enjoyment. The Fast Tract Diet books and mobile app provide valuable resources, listing the FP values for over 350 common foods, including 60 types of vegetables, along with daily allowances of FP as part of a comprehensive dietary solution.
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The diet is based on the innovative Fermentation Potential (FP) system, which estimates how likely a food is to ferment in the gut and trigger symptoms
The Fast Tract Diet is a science-based, practical approach designed to help individuals identify and reduce foods that contribute to digestive symptoms. It is rooted in food chemistry, microbiology, and human physiology, offering a structured system for making informed dietary choices that support digestive health and long-term symptom relief.
At the core of the Fast Tract Diet is the innovative Fermentation Potential (FP) system. FP is a scientifically derived metric that estimates how likely a food is to ferment in the gut and trigger symptoms. This flexible system empowers individuals to tailor their food choices while maintaining dietary variety and enjoyment.
The Fermentation Potential (FP) system is a mathematical formula created by Dr. Norm Robillard that measures symptom potential in foods and drinks. The system is the backbone of the Fast Tract Diet for Small Intestinal Bacterial Overgrowth (SIBO), acid reflux, GERD, LPR, Irritable Bowel Syndrome (IBS), and other SIBO-related conditions.
The Fast Tract Digestion books list the Fermentation Potential (FP) or symptom potential for over 350 common foods, including 60 vegetables. The books also provide daily FP allowances as part of a comprehensive dietary solution. The Fast Tract Diet mobile app is another valuable resource, offering meal planning, point and symptom tracking, voice recognition for looking up foods, and a built-in FP calculator.
The FP system helps individuals make informed dietary choices by providing a metric for understanding how different foods can contribute to digestive symptoms. By following the Fast Tract Diet and utilizing the FP system, individuals can improve their digestive health and manage their symptoms effectively.
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The Fast Tract Diet is designed for individuals dealing with SIBO and a wide range of digestive and other health conditions
The Fast Tract Diet is a science-based, practical approach to managing Small Intestinal Bacterial Overgrowth (SIBO) and other digestive issues. It is rooted in food chemistry, microbiology, and human physiology, and offers a structured system for making informed dietary choices. The diet distinguishes between easily digestible, gut-friendly foods and those that cause excess fermentation in the small and/or large intestine, which can lead to symptoms such as gas, bloating, abdominal pain, diarrhoea, constipation, pressure, and reflux.
The core of the Fast Tract Diet is the Fermentation Potential (FP) system, which estimates how likely a food is to ferment in the gut and trigger symptoms. This flexible system allows individuals to tailor their food choices while maintaining dietary variety. The diet does not starve gut bacteria but instead limits hard-to-digest fermentable carbs that feed them.
The Fast Tract Diet is designed to be a long-term solution for digestive health and symptom relief. It was introduced at Digestive Disease Week in 2013 as a drug- and antibiotic-free strategy for managing SIBO and other digestive disorders. The diet provides a practical framework for improving digestive health and reducing symptom recurrence.
The Fast Tract Digestion book series and mobile app are resources that individuals can use to get started with the diet. The books list the FP values for over 350 common foods, including 60 vegetables, and provide daily allowances of FP as part of a complete dietary solution. The app includes meal planning, point and symptom tracking, voice recognition for looking up foods, and a built-in FP calculator.
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The diet does not focus on testing but has a three-pillar approach – limit the amount of all five types of fermentable carbohydrates that are hard to digest
The Fast Tract Diet™ is a science-based, practical approach to help individuals identify and reduce foods that contribute to digestive symptoms. It is rooted in food chemistry, microbiology, and human physiology, offering a structured system for making informed dietary choices that support digestive health and long-term symptom relief. The diet distinguishes between easily digestible, gut-friendly foods and those more likely to cause excess fermentation in the small and/or large intestine, which can trigger symptoms like gas, bloating, abdominal pain, diarrhoea, constipation, pressure, and reflux.
At its core, the diet focuses on the innovative Fermentation Potential (FP) system, which estimates how likely a food is to ferment in the gut and trigger symptoms. This flexible system empowers individuals to tailor their food choices while maintaining dietary variety and enjoyment. The FP system is a scientifically derived metric, and the diet provides a practical framework for improving digestive health and reducing symptom recurrence over time.
The diet does not focus on testing but has a three-pillar approach: limit the amount of all five types of fermentable carbohydrates that are hard to digest. These include sugars, starches, and fibres, which are broken down as follows:
- Sugars are the simplest type of fermentable carbohydrate, made up of one or two sugar molecules like glucose, fructose, and sucrose. They are prevalent in fermented foods and toasted grains like barley, oats, wheat, and corn, as well as fruits like grapes, apples, and pears.
- Starches are more difficult to ferment and include wheat flour, corn starch, and potato starch. Toasting or roasting these starches can convert them to sugars, making them easier for yeast to ferment.
- Fibre is a group of carbohydrates that resist digestion in the gut. It includes a wide range of substances, such as β-glucans and wheat bran, and can be further classified based on chemical structure, chain length, solubility, viscosity, and fermentability.
By limiting these hard-to-digest fermentable carbohydrates, the Fast Tract Diet aims to reduce excess fermentation and improve digestive health without restricting beneficial gut bacteria.
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Frequently asked questions
The Fast Tract Diet is a science-based approach to help individuals identify and reduce foods that contribute to digestive symptoms. The diet distinguishes between easily digestible, gut-friendly foods and those more likely to cause excess fermentation in the intestine, which can lead to symptoms like gas, bloating, and abdominal pain.
The ultimate goal of the Fast Tract Diet is to rebalance the gut microbiota by limiting hard-to-digest fermentable carbohydrates that feed both good and bad gut bacteria.
The Fast Tract Diet utilizes the Fermentation Potential (FP) system, a scientifically derived metric that estimates how likely a food is to ferment in the gut and trigger symptoms. This flexible system allows individuals to tailor their food choices while maintaining dietary variety.
The Fast Tract Diet provides a practical framework for improving digestive health and reducing symptom recurrence over the long term. It is a drug- and antibiotic-free strategy for managing SIBO (Small Intestinal Bacterial Overgrowth) and other digestive disorders like IBS.
Many people have found success with the Fast Tract Diet, claiming that it has helped their symptoms more than other diets, medications, or herbal treatments. Some have praised it as a safe and effective treatment option for digestive issues, recommending it as a first step before introducing prescription drugs or antibiotics.






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