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# Food Intolerance Tests / FODMAP Testing

### Food Intolerance Tests with Your FoodMarble Device

If you’ve been struggling with uncomfortable digestive symptoms, it can sometimes feel like guesswork to figure out what’s behind them. That’s where Food Intolerance Tests come in.

Your FoodMarble device allows you to track fermentation in your gut after consuming a natural FODMAP sample — helping you get clearer answers about which foods may be playing a role in your symptoms.

### The FODMAPs We Test

Our intolerance tests cover four of the most common and often troublesome FODMAPs:

* **Fructose**
* **Lactose**
* **Sorbitol**
* **Inulin**

Many people find at least one of these difficult to digest, so testing can help bring clarity to what may otherwise feel unpredictable.

### How FODMAPs Cause Symptoms

Here’s what happens:

* FODMAPs can pass through the stomach and small intestine **without being fully digested**.
* When they reach the large intestine, **gut bacteria ferment them**, releasing gases.
* For some people, this fermentation process can trigger bloating, cramps, pain, diarrhea, or other digestive discomfort.

👉 Understanding which FODMAPs affect *you* is the first step toward reducing those frustrating symptoms.

### Why Do a FODMAP Test?

While testing isn’t required, many people find it helps them get to the root of their digestive challenges more quickly.

* You can begin using your device straight away whether you purchase the food intolerance kit or not. 
* But intolerance tests give you a **clearer, faster answer** on whether specific FODMAPs may be contributing to your symptoms.
* Over time, combining daily breath tests with food logging will help you see patterns in your digestion.

💡 Think of intolerance tests as a shortcut to insights that might otherwise take weeks or months of trial and error.

### Preparing for a Test

A little preparation ensures your results are reliable:

* The FoodMarble app will guide you through the steps.
* Most people don’t feel any different during the test, but some may notice temporary discomfort.
* If you suspect difficulty with a certain FODMAP, it’s best to schedule your Challenge on a day when you don’t have important plans — just in case.

### What’s in the Packets?

Each packet contains an amount of sugar naturally found in common foods:
* **Fructose** → equivalent to 2 medium-to-large apples
* **Lactose** → equivalent to 2 cups of milk
* **Inulin** → equivalent to 1–1.5 Jerusalem artichokes
* **Sorbitol** → equivalent to 2 servings of prunes (actually 1.7 servings, rounded up)

If you know these foods cause you discomfort, you may:
* Skip the test altogether, or
* Test with a smaller portion of the packet (note: results may be less accurate if you use less than the full amount).

### Key Takeaway

The food intolerance tests are optional — but many people find they give quicker insights into their digestion. Whether you choose to complete them or not, your FoodMarble device will continue to provide valuable information when you log meals and breath readings daily.

✨ Over time, you’ll start spotting meaningful patterns, giving you more clarity, more confidence, and hopefully, more comfort in your everyday life.

*Sources:*
* USDA
* [Medical News Today](https://www.medicalnewstoday.com/articles/318593.php)
* Stacewicz-Sapuntzakis M, et al. *Crit Rev Food Sci Nutr.* 2001 May;41(4):251-86