Can you have black coffee while intermittent fasting?
Black coffee usually does not break an intermittent fast because it has very few calories.
Step by step
The longer answer
Black coffee usually does not break an intermittent fast because it has very few calories. In everyday intermittent fasting, the easiest rule is to keep the fasting window to water, plain tea, and black coffee unless you intentionally follow a modified fast. Track the choice so you can see whether it affects cravings or consistency.
If black coffee makes you hungrier, switch back to water, plain tea, or black coffee for a cleaner test.
Changing the rule for black coffee every day and then not knowing what actually helped.
Track the fasting window, black coffee, hunger, energy, and whether you finished the fast.
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.