Does kombucha break a fast?

Q: Does kombucha break a fast?

No - breaks a clean fast. Usually breaks a clean fast. Fermented tea is not the same as plain unsweetened tea. Drink it in the eating window and check serving size carefully.

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Breaks a fast

Usually breaks a clean fast

20-80 kcal

No - breaks a clean fasthigh confidenceNutrition-label evidence

Decision

No - breaks a clean fast. Kombucha commonly contains sugar and calories, even when the label looks healthy.

Reason

Fermented tea is not the same as plain unsweetened tea.

Evidence

Nutrition labels for kombucha usually list calories and sugar per bottle or serving.

How we calculate this value

Base tier: 25/100 for "Breaks a fast". Item adjustment: -3 points for calories, nutrient signal, product variability, and safety caution. Final Fast Score: 22/100.

What to do

Drink it in the eating window and check serving size carefully.

References for this answer

Methodology

USDA Agricultural Research Service: FoodData Central U.S. Food and Drug Administration: Added Sugars on the Nutrition Facts Label