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Can You Have Coffee When Intermittent Fasting

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/8can You Have Coffee While Intermittent Fasting

Intermittent Fasting: Can You Have Coffee?

Truth be told, low-calorie drinks like coffee can be safely enjoyed when you are following Intermittent Fasting. Low-cal drinks will not push your body out of fasting states, and hence, they can be safely had during both the fasting and eating window, or won’t really impact your progress in a significant manner.

Black coffee is the drink most dieters prefer to have.

Black coffee contains roughly 2-3 calories , some trace minerals and very low protein. If you were to think of having 2-3 cups a day, the calories and nutritive values won’t be enough to initiate a metabolic difference that would hamper weight loss. Hence, black coffee can be safely consumed.

My Glucose And Ketone Readings

Whether I had black coffee, nothing at all, or my intermittent fasting coffee recipes, my readings were always the same. My blood glucose levels were around 5.0 mmol/L and my ketones were around 0.5 mmol/L.

Would you like to test your glucose and ketones? I use the Keto Mojo and my affiliate link will give you a 15 percent discount.

Intermittent Fasting Coffee Recipes

My favorite way to have my morning coffee was with coconut milk. Thats what I have been doing for a long time! Very simple, satisfying, and filling. Its also the first coffee I tested months ago to make sure it wasnt affecting my blood glucose. I had tested it later in the morning, after the dawn effect rise. As I was looking for intermittent fasting coffee recipes to try and test, I found different forms of bulletproof coffee recipes. I think I may start drinking these more often. I love how full and satisfied they made me feel!

Also Check: How Does Fasting To Lose Weight Work

Benefits Of Intermittent Fasting With Bulletproof Coffee

Besides helping to fill you up and stay in a fat-burning state, Bulletproof Coffee delivers some big benefits:

  • Suppresses your hunger hormones: When youre in ketosis, your body burns fat for fuel and produces ketones. Ketones suppress ghrelin your hunger hormone and increase cholecystokinin , which can make you feel full.
  • Stabilizes blood sugar: Carbs and protein require insulin in order to be metabolized, so coffee with milk and sugar first thing in the morning will cause your insulin to spike. After the spike, your blood sugar will fall, leaving you dragging before lunchtime. Eating mostly fats and protein, like those you get in Bulletproof Coffee, keeps insulin levels low and stable.
  • Helps you produce more ketones, faster: Bulletproof Coffee also contains Brain Octane MCT oil. Brain Octane oil is a high-quality MCT oil that gives you quick energy and helps your body produce ketones up to four times faster than coconut oil alone. Faster production of ketones gets you in ketosis faster and keeps you there longer.
  • Boosts your workout results: Researchers have found that when your mTOR levels are suppressed, they bounce back up, which triggers muscle-building activity. Intermittent fasting, exercise and coffee all suppress mTOR. When you combine all three, you may see more muscle-building results from your workouts.
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    About Courtney Sperlazza, MPH


    Does Coffee Break A Fast

    Intermittent Fasting &  Coffee: Can You Drink Coffee While ...

    Such a dietary pattern as fasting allows consuming low- and zero-calorie beverages in moderate amounts. Such drinks are unlikely to break your fast.

    Black coffee belongs to this list. One cup of this drink has a barely detectable amount of minerals, fat and protein. Moreover, such amount of coffee contains approximately 5 calories , which is not enough to affect your metabolic rate and break your fast.

    Black coffee offers some health benefits as well. For example, according to the recent research, this drink may lower your risks of type 2 diabetes, heart attack, heart stroke, liver diseases and even Parkinsons disease . Dieters also claim that black coffee helps to decrease your appetite, which makes it easier for you to follow the dietary plan and manage your fasting days. However, this theory lacks scientific backing.

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    Read Also: What Can I Eat For Fasting

    Does Cinnamon In Your Coffee Break A Fast

    AENpeeps LOVE adding cinnamon to their Keto Coffee. It’s a great way to spice up your morning cup of Joe routine. In fact, AENpeeps Brittnee uses cinnamon, along with a few other warming spices such as cardamom and nutmeg, in her daily cup of Keto Coffee.

    But if you’re using Intermittent Fasting, will cinnamon BREAK your fast and reverse your results?

    Today I’m breaking down the science behind whether or not you can have cinnamon during your fasted period and still see results!

    Coffee And Fasting The Big Picture

    When consumed in moderation, black coffee should not break your fast. In other words, having some coffee wont kick you out of ketosis or a fat burning state. This is usually true as long as you are a healthy individual who hasnt been diagnosed with diabetes and who metabolizes coffee quickly . However, there is some controversy over how coffee impacts the fasted state in other ways.

    Coffee, for starters, has many different compounds in it, not just caffeine. Plant compounds in coffee have actually been found to increase autophagy, a cellular recycling stage of intermittent fasting! Learn more here with LIFEApps blogger Zach about coffee and autophagy. Antioxidants in coffee may also help reduce inflammation and insulin resistance when consumed over time.

    Caffeine in coffee, however, can temporarily raise levels of stress hormones like cortisol and epinephrine. These can in turn raise your blood glucose levels by signaling your liver to create new glucose molecules from proteins and fatty acids. Stress hormones can also temporarily block glucose uptake into your muscles . Dose matters for these effects. Consuming two cups of black coffee in 10 minutes has been found to double levels of plasma epinephrine. However, epinephrine infusions in humans that cause plasma levels to reach 3-5 times normal levels have only been observed to cause small changes in fasting blood glucose levels .

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    A Couple Of Tips For Your Success

    • When you order coffee at your favorite coffee shop, go for espresso or Americano, these are black coffees, which wont affect your diet. It is also better to avoid almond milk or any nut milk. The majority of coffee shops use sweetened versions of almond milk, which can break your fast.
    • According to research, chewing a gum can help you reduce hunger . It will help you tide over the fasting period. If you are afraid that sugar in your gum will break you fast, opt for sugar-free chewing gums.
    • Be careful with exercising. Yes, regular physical activity is vital for your health and weight loss, but if you are a newbie in the world of intermittent fasting, it is better to opt for low intensity training sessions and then gradually increase the load. Yoga or walking will be perfect for this case.

    Coffee With Butter Or Ghee

    Can I have Flavored Coffee While Intermittent Fasting?

    Grass-fed butter gives classic Bulletproof Coffee a creamy consistency. It also contains high-quality fats that increase satiety and energy level.

    Furthermore, grass-fed butter provides powerful nutrients such as vitamin A, beta-carotene, butyrates, or conjugated linoleic acid.

    If you are looking for an allergy-friendly, shelf-stable option with almost no lactose, grass-fed ghee is your answer.

    Butter, like coconut oil, ghee breaks a fast but should not significantly affect autophagy.

    Although the intake of proteins interrupts this self-cleaning mechanism of the body, the amount in butter is negligible.

    Ghee is even safer, as it is ultra-clarified butter without any lactose and protein.

    Also Check: Which Is Better For Weight Loss Keto Or Intermittent Fasting

    Intermittent Fasting: Coffee With Skim Milk

    Even with milk, the low-fat variant makes everything worse. As with other low-fat products, more sugar is hidden in skim milk. And of course less fat to counteract it.

    In short, with skimmed milk, blood sugar and insulin levels rise even faster. Thats why cereals with milk, for example, is one of the worst meals for your health not only when youre on a ketogenic diet.

    Also, skimmed milk is out. What about half and half?

    Coffee With Coconut Oil: Glucose Readings


    When we look at our blood glucose readings and how they were affected by the coconut oil, we see that my glucose started at 79 mg/dL and ended at 78 mg/dL.

    Keiths glucose reading at the beginning of the morning was 107 mg/dL and then went up to 120 mg/dL before dropping down to 96 mg/dL at the end.

    So did coconut oil knock us out of ketosis or spike our glucose?

    Were gonna say no, but the 13-point jump that I had right after drinking the coconut coffee was a finding of concern.


    Yeah, and these results were much different than our results with MCT oil.

    MCT oil clearly boosted our ketones and dropped our blood glucose.

    If you are putting coconut oil in your morning coffee, you are most likely not breaking your fast.

    However, we would say you are better off switching to MCT oil. Agree?



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    No Black Coffee Wont Break Your Fast

    The key with fasting is calorie count. As long as food or drink doesnt have calories, it wont break your fast.

    That means black coffee is fine to pair with intermittent fasting. Technically it has about 4 calories per cup, due to natural oils and amino acids in the coffee beans but 4 calories is not enough to impact your fasted state.

    That said, many coffee additions will break your fast. Milk, cream, collagen protein, sugar, creamer anything with calories will take your body out of fasting mode.

    But as long as you drink it black , a morning cup of joe wont interfere with your fasting window. In fact, it may enhance some of the benefits of fasting.

    + Circadian Clock Melatonin

    Intermittent Fasting &  Coffee: Can You Drink Coffee While ...

    Something all individuals practicing intermittent fasting should be aware of is that caffeine in coffee can reset our daily or circadian biological rhythms. Intermittent fasting also impacts of our circadian rhythms, usually in a positive way if we eat in tune with our daylight and active hours and fast longer overnight. But drinking coffee, especially later in the day, can delay our circadian melatonin rhythms by 40 minutes or more depending on the dose. Cyclic AMP actually plays a role here too the rising and lowering of cAMP levels helps our cells keep time, so to speak. By preventing the degradation of cAMP, caffeine lengthens the period of cellular circadian rhythms.

    In other words, when exposed to caffeine our cells go through a kind of jetlag where their days get longer.

    In summary, caffeine intake in the form of coffee can impact our circadian rhythms and lower our production of melatonin, the sleep hormone. Its best for this reason to confine your coffee intake to early in the day, especially if improved sleep is one of the benefits youd like to glean from your daily intermittent fasting practice.

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    How Coffee With Cream And Sugar Affects 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.

    What Is Intermittent Fasting

    Intermittent Fasting is one of the most popular weight loss trends to date. Unlike a typical diet, intermittent fasting is about when you eat, instead of what you eat. This trend requires a set eating schedule and consistent fasting times to be truly effective.

    An eating pattern rather than a conventional diet, the belief is that periods of fasting are more normal than eating 3 square meals per day because ancient hunter-gatherers would go through regular periods of scarcity due to an inability to find food.

    There are a variety of fasting schedules and plans that have been designed to accelerate weight loss through metabolic switching.

    Essentially, when your body is fasting, it uses stored body fat for energy. Levels of Human Growth Hormone increase up to 5 times their regular amount, which induces fat loss and muscle gain, and insulin levels drop to make stored fat more immediately accessible.

    Hormone changes may also cause your metabolic rate to increase, leading to more calories burned.

    Your cells also begin repair processes like autophagy, in which your cells digest old, unusable cellular protein build-up.

    Prior to beginning an intermittent fasting schedule, approval should be given by your primary care provider. They can answer any questions you may have regarding intermittent fasting and how it will affect your personal physical health and mental wellness.

    Also Check: How To Make Intermittent Fasting Easier

    Caffeine While Fasting: What The Experts Say

    According to Dr. Akil Palanisamy, physician and author of The Paleovedic Diet:

    “Autophagy is the self-cleaning process by which the body’s cells break down and recycle damaged proteins and components. This is activated by intermittent fasting, but anything other than water disrupts it to some extent.

    Dr. Rhonda Patrick, a Ph.D in biomedical science and expert on nutritional health, seems to agree in this interview with Joe Rogan. She says that drinking black coffee, green tea and vitamin supplements break the fast.

    On the other hand, some experts agree in saying that caffeine is okay while fasting, but only to a certain extent:

    • Steve Kamb, fitness instructor, publisher, and writer best known for promoting health and wellness at, says its OK to drink any zero-calorie beverages during an intermittent fasting routine.

    Zero-calorie beverages are okay. As previously stated, I drink green tea in the morning for my caffeine kick while writing. If you want to drink water, black coffee, or tea during your fasting period, thats okay. Remember, dont overthink it keep things simple! Track your results, listen to your body.

    • Dr. Josh Axe, D.N.M., C.N.S., D.C., of and best-selling author of Eat Dirt thinks that tea and coffee are fine to consume as long as you don’t add any milk or sweeteners. He explains on his blog:

    What Not To Add To Coffee During Intermittent Fasting

    Can I Have Cream in Coffee When Intermittent Fasting?

    In general, if youre trying to TRULY fast you shouldnt add ANYTHING to your black coffee while youre fasting. Because you dont want to increase calories! And even a cup of Bulletproof Coffee has around 400 calories. But like we said, some people use a form of fasting that actually INCLUDES a coffee with some calories in the morning to help control appetite and get through the day! And using something likeMCT oil in your coffee could definitely help control cravings for the rest of the day!But if youre trying to go for almost 0 calorie fasting, you should stay away from even MCT oil! Ultimately, its up to you to find out how to make intermittent fasting and black coffee work for you!

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    Does Coffee Make Intermittent Fasting Easier

    Good news the answer is a resounding YES!!! Here are four reasons why you should NOT ditch your coffee just yet:

    Caffeine boosts your metabolism.

    If weight loss is your primary goal for doing intermittent fasting, then this is music to the ears. There are 3 ways that caffeine boosts your metabolism:

  • Caffeine has substances that boost metabolism, namely theophylline, theobromine, and chlorogenic acid, which help our body accelerate the breaking down of sugars and absorb fewer carbohydrates.
  • Caffeine helps burn fats because it increases energy levels and makes your body work hard. You can then say goodbye to extra calories as they burn.
  • Caffeine increases the metabolic rate.
  • We talked about this at length in the article How does caffeine affect your mood.

    It keeps you alert and attentive, eases and reduces the risk of depression, helps you get along with people better, and basically just turn you into a walking ball of sunshine.

    These are the things you especially need when going through intermittent fasting!

    Its a way to treat yourself.

    When doing something thats beyond your usual rhythm, you need something to motivate you and keep you happy.

    If youre a coffee-lover, having your usual cup of joe is definitely one way to treat yourself and one piece of normalcy you can have during the ordeal of fasting which isnt easy!

    And just by taking some of the experts advice above, youve got nothing to lose by having your java fix!

    Can caffeine help with ED?

    Coffee During Intermittent Fasting: Yay Or Nay

    Short answer: Yes! Good news, right? Dont go running to your local foam parlor just yet its not that simple.

    First, lets define coffee. Any aficionados will know that theres a myriad more on offer than a simple cup of dark roast.

    The part you wont like: A double mocha cappuccino with whipped cream and sprinkles does not qualify. Neither does a latte with 8 ounces of milk. While fasting, coffee is coffee with nothing in it.

    So, yes, drinking black coffee during most types of intermittent fasting is totally OK. The popular 16:8 Leangains protocol actually goes so far as to say that coffee with a splash of milk is acceptable in the fasted state .

    With just 4.8 calories per medium brewed coffee, it makes sense that a cup of coffee wont do much damage to your metabolism or blood sugar.

    Coffee may actually help you speed up weight loss, according to recent research. Bakuradze T, et al. . Antioxidant-rich coffee reduces DNA damage, elevates glutathione status and contributes to weight control: results from an intervention study. You may have to get used to the taste of black coffee , but we have faith in you.

    Heres a list that gets the green light during the fasting phase, according to some IF experts.

    Recommended Reading: What To Eat During Fasting

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