Does Matcha Break A Fast? [Full Answer, Backed By Science]
Does matcha break a fast? Can you have matcha tea while fasting? Get all of your questions answered here!

Can you drink matcha while fasting? Does matcha tea break a fast? It can be confusing to determine what breaks your fast and what doesn’t. In this article, we will share research so you can determine for yourself if matcha tea will break your fast. Keep reading to learn more!
If you’re looking for matcha, we recommend Pique Matcha. Pique Matcha was formulated by fasting expert Dr. Jason Fung. Pique Matcha contains no preservatives, refined sugar, or additives. It is also USDA organic and triple toxin screened for purity.
Does Matcha Break A Fast?
No, matcha will not break your fast. It is safe to consume matcha with hot water while fasting.
Does Matcha Break A Fast – Further Details
No, matcha will not break your fast. However, it is important to note that matcha mixed with hot water will not break your fast. If you choose to mix your matcha with hot milk of any kind, this WILL break your fast.
Milk will spike your insulin levels and pull you out of a fasted state. Water on the other hand, will not spike your insulin levels and will therefore keep you in a fasted state.
For more tips, check out our complete intermittent fasting guide.
What Teas Break Your Fast?
What teas should you avoid while fasting? Here are several teas that break your fast that should be avoided.
Any fruity or flavorful tea
Fruity and flavorful teas typically spike your insulin levels and break your fast. This also includes adding fruit to your teas. For example, don’t add lemon to your green tea as this would break your fast.
Any tea with milk, creamer or sweetener
Do not add anything to your tea while you are fasting! If you want to sweeten your tea, consume it during your eating window.
What Can I Consume While Fasting?
If you are following a clean fast, you can consume the following items when fasting:
- Water (unflavored, no added fruit)
- Black coffee
- Plain green tea or black tea
- Mineral water, unflavored sparkling water, seltzer water (with no added ingredients)
- Salt, electrolytes or minerals (unflavored, no additives)
- Medications as prescribed by your doctor

Frequently Asked Questions
Does matcha stop autophagy?
Drinking matcha with water should not stop autophagy. If you are serious about staying in autophagy, you could wear a continuous glucose monitor to be sure that matcha does not spike your insulin levels.
Does matcha spike insulin?
When matcha is mixed with water, it will not spike your insulin. However, if you mix matcha with milk of any kind, it will likely spike your insulin.
Related: The Best Teas For Fasting