Combined Fermentation Score Explained

📊 How Fermentation Scores Are Calculated

Fermentation scores (or F-scores) reflect the combined levels of hydrogen and methane gases in your breath.

For example:

A total score of 6.0 with a 1:1 hydrogen to methane ratio means:

• Hydrogen = 3.0
• Methane = 3.0

This would be considered low for each gas individually, even though the total score falls into the medium range.

📈 Score Ranges in the App

As outlined in the app, fermentation scores are categorized as:

• Low: 0.0 – 3.4
• Medium: 3.5 – 6.7
• High: 6.8 – 10.0

These categories help you spot trends over time and identify which foods or situations lead to increased fermentation.

🧠 Important Insights

• Some users with consistently high background methane levels find that hydrogen spikes are more closely linked to symptoms like bloating or discomfort.
• On challenge days, it's generally fine to proceed even if your methane is elevated, as long as your hydrogen score is low. This helps ensure that the data from the challenge is still meaningful and not confounded by active fermentation.

By tracking your scores, food intake, and symptoms together, you can build a clearer picture of what your body tolerates best — and make more informed dietary decisions over time.

Updated on: 12/08/2025