Does green tea with honey break a fast?

Yes, honey is sugar and breaks a fast. Drink it plain to stay fasted.

Is matcha okay during a fast?

Plain matcha whisked in water is essentially calorie-free and fast-safe. A matcha latte with milk and sweetener is not.

Does green tea boost autophagy?

Its catechins are linked in research to autophagy support, and plain green tea does not interrupt it.

Can I drink green tea on an empty stomach?

Yes, though if it causes nausea, have it later in your fasting window or with a pinch of salt.

Does Green Tea Break a Fast?

Reviewed by the FastTrack team · Updated June 2026

Short answer: No

Green tea does not break a fast. Unsweetened green tea is essentially calorie-free, does not raise insulin, and may gently support fat burning and focus during a fast.

Calories	~0-2 kcal per cup
Breaks a weight-loss fast?	No
Breaks ketosis?	No
Breaks autophagy?	No
Insulin impact	Negligible

Why green tea is fast-safe

Plain brewed green tea contains almost no calories and no sugar, so it does not trigger the insulin response that ends a fast. Its catechins, especially EGCG, are associated with modest increases in fat oxidation, and its caffeine helps with appetite and focus during a fasting window.

When green tea does break a fast

The tea itself is fine; sweetened, bottled, or honey-added versions are not. Many ready-to-drink green teas contain sugar and will break a fast. Stick to plain brewed or unsweetened tea, hot or iced.

How much is safe

Two to four cups across the day is comfortable for most people. Because green tea contains caffeine, avoid it late in the day so it does not interfere with sleep.

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Frequently asked questions

Does green tea with honey break a fast?: Yes, honey is sugar and breaks a fast. Drink it plain to stay fasted.
Is matcha okay during a fast?: Plain matcha whisked in water is essentially calorie-free and fast-safe. A matcha latte with milk and sweetener is not.
Does green tea boost autophagy?: Its catechins are linked in research to autophagy support, and plain green tea does not interrupt it.
Can I drink green tea on an empty stomach?: Yes, though if it causes nausea, have it later in your fasting window or with a pinch of salt.