Articles on: Your FoodMarble journey

FoodMarble Glossary

This glossary comprises a list of new terms you will come across now that you are a part of the FoodMarble community.

AIRE Insiders

AIRE Insiders is our private FoodMarble community group hosted on Facebook. It is exclusively for FoodMarble customers to share and discuss their experiences. You will be asked to share your order information before being granted access to the group. You can request to access here.

Breath Test

A FoodMarble breath test is a quick measure the gasses present on your breath using your FoodMarble device. From the level of gas present, we can measure how much fermentation is happening in your digestive system.


A challenge is like a structured hospital-based test for specific FODMAP intolerances. However, instead of having to visit the hospital to complete tests, you can complete Challenges using your FoodMarble device and the Challenge functionality found within the Discovery section of the FoodMarble app. These tests require preparation - you need to eat low FODMAP, avoid alcohol and fast for 12 hours in advance.


Fermentation is a natural process which occurs in the gut as food materials that haven't been sufficiently broken down in the stomach and small intestine reach your colon where your gut bacteria reside.

Fermentation Score

A fermentation score (f-score) presented on a range of 0-10 represents the scoring system used to communicate the activity level in your gut at a given time.
An f-scores is provided to you on the FoodMarble app screen every time you take a breath test and you will see them categorised as low (green), medium (orange) or high (red).


This is the software on which your AIRE/AIRE 2 operates. We occasionally release updates with new features and you can see your firmware version under the My Device page in the app.


FODMAPs are a group of fermentable carbohydrates which cause fermentation to take place within your digestive system. To read more about FODMAPs, click here.

Food Library

The food library is a database packed full of ingredients and meals. Each entry provides a breakdown of FODMAP information and basic nutritional information in the selected food(s). The library can be used as a reference to estimate the FODMAPs in your foods.


FOS (aka Fructans) stands for Fructo-oligosaccharides, which are a type of carbohydrate often found in various plants, including fruits and vegetables.


Fructose is a simple sugar, or monosaccharide, that is naturally occurring in many fruits, honey, and some vegetables.


GOS stands for Galacto-oligosaccharides, which are a type of carbohydrate composed of multiple sugar molecules, including galactose and glucose.


The "gut" typically refers to the gastrointestinal tract, which is the tube-like system in the body responsible for digesting food.

Gut Microbiome

The gut microbiome refers to the community of microorganisms, primarily bacteria, that inhabit the human gastrointestinal tract. Your gut microbiome consists of billions of bacteria that live in your intestines (gut). For the most part, these bacteria live peacefully inside you and are a natural and healthy part of digestion. When the bacteria in the gut microbiome digest the food you eat, they do it by a process called fermentation.


Hydrogen is the gas produced as a byproduct of the fermentation process in the gut. As our gut bacteria break down food materials, hydrogen is produced, making it an excellent biomarker for digestive issues.


Inulin is an oligo-saccharide. Inulin is comprised of long chains of fructose molecules and it is a FODMAP that is difficult to breakdown in the body. Approximately 90% of the inulin we consume is passed along to the large intestine where our gut bacteria are equipped with the enzymes necessary to break it down. To read more about why inulin is difficult to digest, click here.


Lactose is a natural sugar found in milk and dairy products. It's a disaccharide sugar composed of two smaller sugar molecules, glucose and galactose.


Mannitol is a polyol which is a type of sugar alcohol, often used as a sweetener in sugar-free or reduced-sugar products.


Methane is a gas which can be produced in the gut if there is a certain type of microbe present. These microbes are called methanogens and most people have these in their gut. These are a type of microbe that can convert hydrogen to methane. The more methanogens you have, the more methane will be produced. The number of methanogens increases with age, but also relates to diet, ethnicity and factors like medications.


Sorbitol is a polyol, also referred to as a sugar alcohol. It's often used as a sugar substitute in sugar-free or reduced-sugar products, like sugar-free gum and candies.

Trends will begin to emerge as you progress through your FoodMarble breath testing journey. The Trends section of the FoodMarble app, accessed via the Home screen, is important to review regularly as this will help you to identify links between high breath readings and other logged data.

Updated on: 12/11/2023

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