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Can You Drink Coffee While Intermittent Fasting

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Caffeine While Fasting Recap:

Can You Drink Coffee While Intermittent Fasting

To settle the big question: can you drink coffee while intermittent fasting and still lose weight?

The basic answer is yes. In some instances, drinking coffee can even help extend your fast!

But were talking plain black coffee here no added sweeteners and no splash of cream. While you can add a little bit of salt to make coffee less bitter, please quit basing intermittent fasting on staying under a certain calorie count during the fasting window.

Following this outdated fasting logic hurts your long term results.

If your primary goal is fat loss, keeping a clean fast will take you much further. It takes many people a long time to come to this same conclusion. Theres hardly anyone out there who will tell you once they started following a clean fast, it was harder to lose weight.

If youre overly stressed and experiencing signs of adrenal fatigue, caffeine in general is a bad idea. Adding more caffeine to a keto and intermittent fasting plan is a just plain awful strategy.

Love learning all of the intermittent fasting strategies that helped me lose 100 pounds? Watch this free keto masterclass to learn 3 big mistakes most keto dieters make that keep them stuck.

While youre there, youll learn how to get our Ready, Set, Fast! course for free.

Consideration #: Cream Has Calories

The third thing to consider is that heavy cream has calories and calories are energy. Your body will likely use those easily accessed calories before returning to the less accessible fat calories stored on your body.

Note: If you follow the strictest definition of a fast, which would be water-only or nothing at all, then you are breaking your fast by consuming calories.

Insulin Resistance And Type

As research shows, regular intermittent fasting improves insulin sensitivity.

Therefore, it reduces high insulin levels, improves blood-sugar metabolism, and eliminates excess sugar in the body.

Furthermore, it can even reverse insulin resistance and type-2-diabetes, which most diets alone simply cant .

The cause of these metabolic diseases lies in the liver. Too much sugar and insulin cause insulin resistance in liver cells for years .

The result is a fatty liver. If you want to get at the heart of many metabolic problems, you must burn off the deposited visceral fat in the liver.

The term visceral fat refers to the accumulation of fat in and around organs, which harms health.

But according to current studies, intermittent fasting, in particular, can burn this dangerous visceral fat more effectively than low-carb diets .

However, intermittent fasting can only burn excess sugar and visceral fat as long as it is not interrupted by food.

For example, it is crucial to drink coffee without milk during intermittent fasting since this would cause blood sugar and insulin levels to skyrocket.

Read Also: Will Intermittent Fasting Lose Weight

Cream In Coffee During Fast

Ive been eating LCHF for about 6 weeks and lost around 26 pounds which obviously Im very happy with. My weight loss has now significantly slowed which Im not overly concerned about but thought Id try 24-hour fasting which Ive done for the last few days and feel great. However, I am having cream in my coffee during the fasting hours which really helps me cope. Am I undoing all the positives of the fast by doing this?


Good question Lucy. First, let me start by saying nobody knows the answer for sure. We simply dont have enough data to support a conclusion.

Anecdotally, I use cream in coffee during fasts as well. For me, that little bit of cream does not stop me from getting the results that I desire.

In others, it may undo some of the positives, but generally not.

The key is to monitor your goals and see if you are progressing.

You can read Diet Doctors full guide on fasting for more information.

Dr. Jason Fung

One Final Suggestion And Its Up To You

Can You Drink Coffee While Doing Intermittent Fasting?

Believe it or not, the Leangains protocol says its OK to drink diet soda while fasting. Yes, diet soda. What is this heresy?

Other IF plans call for clean eating with a complete ban on processed foods. Diet soda is about as processed as these trap vocals.

Lets put diet soda in the maybe column. One every now and then wont kill you or mess with your diet too much.

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What About Taking Supplements During A Fasting Period

This depends on the fasting schedule you’re following, and you should discuss any supplements with your doctor before beginning to take them, says Palinski-Wade. If you fast for a set amount of hours each day, take your supplements during the eating hours , since most supplements like a multivitamin are better absorbed when taken with food.

If you practice intermittent fasting that involves fasting on specific days, like the 5:2 diet, taking supplements is still recommended to ensure you are meeting your nutrient needs each day. Palinski-Wade recommends taking a high-quality multivitamin daily when following any IF plan.

âGenerally, the small amount of calories found in a chewable/gummy/liquid vitamin would not offset a fast day,â she says. “But do discuss this with your doctor or dietitian first to make sure you can take your supplement on an empty stomach.â

The bottom line: At the end of the day, you want to consume close to zero calories during fasting periods. By avoiding sweetened drinks like soda and bottled iced tea, as well as caloric add-ons in your hot beverages, you can ensure you follow your IF plan correctly and successfully.

The Benefits Of Black Coffee

Black coffee is a very powerful fat loss tool on its own, but where it really shines is when you have this in the morning, in a fasted state.

Youre more than simply skipping breakfast youre replacing it with something that will fuel you and reduce your appetite simultaneously.

So here are some of the ways black coffee will improve your fitness life:

Also Check: How Does Intermittent Fasting Work 16 8

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Intermittent fasting involves eating all your calories in a shortened eating window say, between the hours of noon and 6 PM and eating nothing for the rest of the day.

There are many health benefits of fasting, ranging from weight loss and lower blood pressure to increased insulin sensitivity.

But do you get those benefits if you drink coffee during your fasting period?

Or will a cup of coffee break your fast and leave you without the many benefits of intermittent fasting?

Heres a look at the benefits of fasting, how coffee affects your fast, and why you may want to combine coffee with fasting.

How Coffee With Cream And Sugar Affects Fasting

Does Coffee Break A Fast? [Can You Drink Coffee While Intermittent Fasting?]

While the safest bet for maintaining your fast is black coffee, some people simply cant stand the taste.

For those who cant live without creamer or sugar, choose high-quality, grass-fed dairy and use as few additives as possible. These will activate your gut, so if youre fasting for gut rest, steer clear.

However, this exception only applies to a splash of cream or sugar in black coffee, not to your favorite latte or cappuccino. Those sugary additives will add calories that can break your fast or kick you out of ketosis, if thats your aim.

Recommended Reading: Does Intermittent Fasting Burn Belly Fat

Can You Drink Coffee While Intermittent Fasting

That first cup of coffee upon waking. That mid-morning cup of joe. So good and so needed. But the real question is: can you drink coffee while intermittent fasting?

A simple question, and yet, the internet is full of confusing answers. In this post, I explain how you can enjoy your coffee when youre fasting, so you dont break your fast.

Its important that you plan your fasting periods and eating windows, so you dont feel deprived. This way, you know exactly what to expect.

Need a little help? Check out this post: Intermittent Fasting Schedule for Women to learn about fasting and eating windows.

First, you should consult a licensed medical physician before you jump into intermittent fasting. IF isnt for everyone, and therefore, its something to discuss with a licensed professional.

The purpose of this post is to give share insights on how coffee can break your fast it is not to provide any professional/medical advice.

Can I Drink Pickle Juice While Intermittent Fasting

Just like bone broth, the water of sugar-free pickles has already helped many people during fasting. While bone broth is a comprehensive electrolyte dispenser, the cucumber water provides salt in particular.

Therefore you should drink it during intermittent or prolonged fasting if physical pain, such as headache, occurs.

Nevertheless, cucumber water should remain an aid for this particular purpose.

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Fasting And Artificial Sweeteners

Sweet taste is a much-discussed topic regarding intermittent fasting and the keto diet. On the one hand, it is difficult to get away from it. On the other hand, it substantially promotes cravings.

Most sugar-free sweeteners have zero protein, carbohydrates, and calories. Therefore, they do not raise the blood sugar level. But is the calculation that simple?

No, since people often forget that both intermittent fasting and keto have one essential goal: Lowering insulin levels to allow your body to tap into stored fat for energy.

Since the storage hormone, insulin, prevents body fat breakdown and ketone production, a significant increase in insulin levels breaks the fast.

Unfortunately, most diet gurus have not done their homework in this context.

As endocrinologist and fasting pioneer Dr. Jason Fung correctly points out, it does not matter whether food increases blood sugar levels as long as it increases insulin levels .

What Happens In The Body During Intermittent Fasting

Can You Drink Coffee While Fasting?

During the fasting period, few or no calories are consumed which causes insulin levels to drop. The body will then begin to use stored glucose for energy. Once glycogen stores are used up, the body may begin to burn fat for fuel . This can result in minor weight loss which is often one of the primary reasons why one may practice intermittent fasting.

In addition to some of the weight loss benefits, intermittent fasting may also induce cellular repair, reduce inflammation and improve insulin sensitivity. Some animal studies have also shown that intermittent fasting may promote anti-aging and play a role in cancer prevention. However, more human research is needed to confirm these findings.

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Fasting And Diet Coke

One of the best-known sweeteners is aspartame, which has also been the basis for diet coke for decades.

Although calorie-free aspartame does not affect blood sugar levels, it increases insulin levels more than table sugar .

Therefore, the sweetener in diet coke prevents not only autophagy but also fat burning.

With this in mind, it is probably no coincidence that people who consume vast quantities of diet drinks are significantly overweight on average.

Can You Have Coffee While Intermittent Fasting

In other words, does coffee break a fast? The answer is, you can have coffee while intermittent fasting and you do not need to worry that it will compromise your fast.

Some people believe that any calories consumed at all will break your fast, so its black coffee or nothing. While this may be true in principle, its important to ask yourself: What am I trying to achieve by fasting? While certain additions to your coffee may alter your desired effect, others may have negligible effects on your fasting results, so knowing your goals is key. These goals can help you determine what you can add to your coffee to achieve your desired results.

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Remember The Orange Juice

In many movies and TV shows, you often see the main actor getting up from the bed and going straight to the fridge for some orange juice. How many of you have done this before? How many of you reached for the perfect sour-sweet ratio to wake you up. Even before the coffee? Well, even though the orange juice is one of unhealthiest options, the good thing about it is the citric acid, vitamin C and some minerals. So, if we exclude the sugar, maybe we can still enjoy this refreshing waking-up effect of orange juice?! Remember, orange essential oil is quite Keto friendly.

Beckys Glucose Results: Equal

Can I Drink Black Coffee while Intermittent Fasting?

Her blood glucose was at 94 mg/dL, it went up to 105 mg/dL at 30 minutes, then back to 94 mg/dL at 60 minutes, and up to 103 mg/dL at 120 minutes.

It kind of went back and forth a couple of times over the test in both your ketones and glucose.


When we look at my results for Equal, they are actually very similar to my results for sugar.


Yes. Your blood glucose definitely went up a little bit, and your ketones came down a little bit.


Nothing significant happened, I didnt really benefit from it.

As far asyour ketones go:

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Types Of Intermittent Fasting

There are multiple types of intermittent fasting to choose from when you decide to practice this eating pattern:

  • The 5:2 diet: For five days of the week, you eat normally without any restrictions, and on two days of the week you limit your caloric intake to 500 or 600 calories per day. This diet recommends 500 calories for women and 600 calories for men.
  • The 16/8 fast: To follow this method, you limit your eating to a window of time that is 8 hours long each day, and you spend the other 16 hours of the day fasting.
  • Alternate day fasting: This technique requires a day of fasting every other day. On the first day, you eat normally while on the next day you either fast completely for 24 hours or eat less than 500 calories. This pattern continues throughout the week and may be more intense than is advisable for beginners.
  • One meal a day: Only one meal is eaten a day with this type of intermittent fast, and it is usually dinner. During the rest of the day, no calories are consumed.

Drinks To Avoid While Intermittent Fasting

Diet Soda

More research is needed to determine if diet soda can be consumed during a fasting window. However, what we do know is that artificial sweeteners can increase appetite, hunger, and promote long term weight gain. So, it may be best to enjoy diet sodas during your feeding window and choose carbonated water instead.

Pre-Workout Supplements

Pre-workout is usually made up of the following 5 ingredients:

While the majority of the ingredients contained in a pre-workout supplement are zero calorie, one gram of BCAAs contains 5 calories at a typical 2:1:1 ratio of leucine, isoleucine and valine. With that said, the leading ingredient found in pre-workout will most certainly break you from a fast.

Coconut Water

Coconut water is loaded with nutrients like fiber, vitamin C and a variety of minerals. However, one cup contains around 45 calories. Even though this would be considered a fairly low-calorie beverage, coconut water would be better suited to enjoy during a feeding window.



Regardless if the broth is homemade or low in sodium, drinking broth during a fast will provide calories approximately one cup provides around 10 calories. However, consuming broth, especially bone broth, can be a great way to replenish electrolytes lost during a prolonged fasting period.



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Best Beverages You Can Drink While Fasting

  • 4 minute read

What can you drink while fasting?

Intermittent fasting is all the rage these days. And with its purported health benefits, its certainly one to try!

Theres definitely something appealing about a plan that only contains one essential rule. And that rule is: eat for these hours but dont eat for the others.

For people who follow a keto diet, its not hard to overlap intermittent fasting with it.

But when it comes time to actually do it, questions may pop up. And one of those questions is, what can I drink?

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Ketosis And Weight Loss

Can you drink coffee during intermittent fasting?

Since fasting is the most effective way to lower insulin levels, it is essential for weight loss. Accordingly, insulin is the crucial storage hormone in the human body.

Therefore, it is responsible for signaling cells to take up glucose from the bloodstream and store excess energy as fat or glycogen.

Furthermore, insulin blocks the enzyme that can break down body fat .

Accordingly, scientists can predict about 75% of possible weight gain and loss in overweight people by analyzing their insulin levels .

The 16-hours of fasting cut off the supply of nutrients, lower insulin levels, and thus end the bodys storage mode.

The body can then begin to break down the carbohydrate stores . Once the glycogen stores are empty, your body can start to burn stored fat for energy.

This fat burning process is called ketosis and, contrary to many myths, is an entirely natural mechanism that has ensured our species survival.

Nature has designed the body to build up fat reserves during abundance and tap into this body fat for energy when food is scarce.

Nowadays, instead of food shortages, we experience an endless summer and eat round the clock. Thus, we gain weight.

Therefore, intermittent fasting can help to restore the natural balance between feasting and fasting.

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