• Autumn Bates, CCN, MS

Can You Drink Coffee While Intermittent Fasting?

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Can you drink coffee while Intermittent Fasting? If you're brand new to Intermittent Fasting and looking to achieve a weight loss and wellness goal, this thought has probably crossed your mind. Today, I'm diving into the details of coffee and Intermittent Fasting so that you can achieve your wellness dreams!


intermittent fasting coffee

Can You Drink Coffee While Intermittent Fasting?

Coffee contains nearly zero grams of carbohydrates or protein. This means that coffee typically does not cause a spike in the storing hormone insulin and will not break a fast. One of the main fat burning perks of Intermittent Fasting is that insulin levels are naturally low while fasting.(1) This allows the body to tap into fat burning (a process called lipolysis) while fasting. Because coffee doesn't contain any macronutrients that cause a spike in the storing hormone insulin (protein or carbohydrates) it will not break a fast.


Related: 5 Coffee Recipes You Can Have While Fasting


intermittent fasting coffee

What Can You Put In Coffee That Won't Break A Fast?

We know that black coffee is in the clear with Intermittent Fasting because it doesn't spike insulin. However, what can you put in coffee that won't break a fast? The short answer: anything that doesn't contain protein or carbohydrates (for the most part).


Ingredients that are made of 100% fat will not spike the storing hormone insulin. This means adding fats to your coffee will not break a fast. This includes high quality fats such as coconut oil, grass-fed butter, grass-fed ghee or up to 1 Tbsp. of heavy whipping cream or half and half.


However, anything that contains carbohydrates or protein can not be added into a coffee while fasting. This includes collagen, sugar, sweeteners, milk (due to the lactose content) and some nut/seed "milks".


Some ingredients do contain a very small level of carbohydrates, but isn't significant enough to make an impact on insulin levels, and therefore can be added into coffee while fasting. This includes herbs and spices such as cinnamon or nutmeg.


Related: How Many Times Can You Drink Coffee A Day And Still Lose Weight?


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intermittent fasting coffee

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Autumn


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Autumn Elle Nutrition


1. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7021351/


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