Does black coffee break a fast?
Black coffee usually does not break an intermittent fast because it has very few calories.
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The longer answer
Black coffee usually does not break an intermittent fast because it has very few calories. The problem is normally milk, sugar, cream, or flavored syrups. For most intermittent fasting routines, the safest fasting-window drinks are water, plain tea, and black coffee. If your fast is for a medical test or religious purpose, follow those specific rules instead.
Use Fast Goblin notes to mark gray-area choices like black coffee, then compare hunger and consistency over a few fasts.
Assuming black coffee is automatically fasting-safe without checking the label or your fasting goal.
Track whether you had black coffee, the time, hunger level, and whether it made the fast easier or harder.
Educational only. People who are pregnant, breastfeeding, under 18, have diabetes, take glucose-affecting medication, have a history of eating disorders, or feel unwell should speak with a qualified clinician before fasting.
