Can you drink coffee during intermittent fasting?

Can you drink coffee during intermittent fasting?

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  1. Eating anything with more than about 35 calories will break your fast. I’m pretty sure a cup of bulletproof has more calories than that.

  2. In the beginner stage yes, coffee can suppress your appetite and release your store energy. It’s a very helpful tool to deal with hunger.
    As you become experience and want to level up your experience, you want to cut out everything and anything, even water.
    The goal of intermittent fasting is to give your body stress. Our body likes challenge. Only when our body sense a famine is coming, it then trigger the survival mechanism. 23 hours is a very short fast, so in that precious 23 hours, you want to stop everything and anything from entering your system.
    Coffee is really a drug. People have addiction to coffee because it has drug like compound.
    Some years ago, I declare war on coffee. And write up 7 sins of coffee and sentence coffee to the maximum capital punishment.
    Se7en sins of coffee that I shall execute the capital punishment.
    1. It tax our adrenal system heavily.
    2. It mess up our normal sleep.
    3. It mess up our meditation.
    4. It mess up our water balance.

  3. It really boils down to what you’re trying to accomplish with a fast.
    Are you fasting to improve detoxification, metabolic health or longevity – or all three?

    Can you drink coffee during intermittent fasting?

    A little biochemistry helps put everything related to metabolism into context.
    AMP-activated kinase or AMPk maintains cellular energy homeostasis. Anytime you cut out exogenous supply of energy to your cells, AMPk signals your cell to stop growth and start breaking down its own substrates for energy. AMPk is relevant for metabolic disorder whose chronic deactivation is pathogenetic in the development of insulin resistance and other pathologies related to dysfunctional fat metabolism. This is because a AMPk plays a critical role in translocating the glucose-transporting protein complex, called GLUT4 in your skeletal tissue, to the cell surface thereby improving glucose clearance. AMPk activation, put simply, increases your cell’s sensitivity to insulin, a cornerstone in the pathogenesis of virtually all modern diseases of affluence such as fatty liver, diabetes, cardiovascular disease and obesity.
    mTOR regulates cell growth and proliferation under conditions of amino acid sufficiency. mTOR deactivation kick starts autophagy via ULK1 activation. During autophagy, the cell attempts to salvage old proteins and organelles by degrading them into constituent amino acids. Your cell is outfitted with its own digestive apparatus called the lysosome, where digestive enzymes break down everything from ageing organelles, dysfunctional mitochondrion to even viral spike proteins. This gets rid of dysfunctional or ageing organelles and proteins (enzymes, etc.) within the cell, improving many cellular efficiencies, essentially giving your cells a fresh coat of paint. mTOR has two complexes and mTOR1 is of most interest in longevity and cancer risk reduction because of its role in sensing and signalling amino acid sufficiency to the rest of the cell.
    AMPk and mTOR1 have diametrically opposed sensing and signalling within the cell. When one activates, the other is usually deactivated – and vice versa.
    All of the benefits of fasting are related, in one way or the other, to the activation of AMPk and the deactivation of mTOR.
    Metabolic health isn’t the only thing fasting deals with. Your endocrine health also improves sizably in many respects. Foremost, you lipid profile improves. As underfeeding increases the prevalence of phenotype A LDL particles through CETP inhibition. CETP is a plasma enzyme that is activated by sensing triglycerides, a form of excess energy storage. Frequent eating and high carbohydrate diets can predispose one to endocrine system dysfunction. Since phenotype B LDL is associated with overfeeding and CETP activation, there is impaired cholesterol transport throughout the body and to the adrenals and reproductive organs where steroid hormones are assembled. Lower levels of insulin, your primary anabolic hormone, also allows other hormones to kind of ‘speak through’, namely your adipocyte hormones and such.

    Can you drink coffee during intermittent fasting?

    Insulin has been shown to have an inhibitory effect on the function of many other hormones, one of which is adiponectin which, like your glucocorticoids, helps with glucose homeostasis, lipid metabolism and works like an antioxidant too!
    Insulin and stress hormones, like cortisol and glucocorticoids, are the most basic hormones on the hierarchy. They help with glucose homeostasis without which, you would pass out and possibly die. Your brain especially needs a blood glucose to be maintained within a small, optimal range and these hormones work around the clock to ensure that. When you eat, insulin clears excess glucose from circulation to prevent hyperglycaemia and during fasting, glucagon and glucocorticoids maintain ideal blood glucose levels. Stress hormones here increase blood glucose and induce transient insulin resistance in skeletal tissue to spare as much glucose for the brain, where it’s most required for attention and focus during a stressful situation.
    Hormonal imbalances only arise when these glucose homeostatic factors like pancreatic and adrenal hormones become dysregulated in first place, which then sets off a cascade of hormonal disturbances. Think of insulin like a car, on a highway. The more insulin you have in your system, the less space there is for other hormones to do their respective roles. If there is a big, fat truck driving down the highway, all other cars must slow down to let it pass. The more frequently you eat, the more traffic you create in your endocrine system which allows other hormones to get dysregulated. Keeping your insulin levels low through fasting and a low-carb regime helps balance your hormones.
    Your immune system also benefits from improved transport of cholesterol via phenotype A LDL to the skin where its metabolite, 7-dehyrocholesterol is converted to vitamin D (cholecalciferol) in the presence of sunlight (UV-B irradiation). Vitamin D is the most important hormone for general immunity. All of your immune cells have vitamin D receptors just to give you a hint of its importance in modulating and upkeeping both your innate and adaptive immune responses. Vitamin D is also a key modulator of the renin-angiotensin-aldosterone system which helps reduce pulmonary and cardiovascular problems (hypertension, cardiovascular disease, stroke and even pulmonary hypertension which causes CoVID deaths!) by encouraging healthy electrolyte balance and maintaining the vascular tone and function.
    While the interplay of endocrine and immune system stops with vitamin D, underfeeding reduces the detoxification burden on the enzymatic machinery in your liver that deals with the functionalization, conjugation and elimination of ingested toxins. Functionalization enzymes such as those belonging to the CYP450 family first converts fat-soluble toxins into water-soluble polar metabolites. These polar molecules are then conjugated with another enzyme to make it more hydrophilic for easy excretion via urine. Since Phase I detoxification can yield reactive oxygen species and other unstable free radicals due to the redox reactions that take place to polarise hydrophobic toxins, Phase II detoxification enzymes like CAT, SOD and GLT must readily catalyse their conversion to less harmful substances, namely water. The resulting water and water-soluble metabolites are then ready to be excreted renally with some metabolites even appearing in sweat and breath.
    Anytime you eat especially foods that contain high amounts of toxins such as plants (the seeds and leaves of plants mainly such as leafy green vegetables are heavily armed against predators such as yourself along with grains/legumes), prescription and OTC medications and other environmental toxins such as airborne pollutants, heavy metals and cigarette smoke, you put a great deal of stress on your detoxification apparatus resulting in oxidative stress. This is seen in studies where exposure to plant toxins, heavy metals and airborne pollutants acutely raises SOD, CAT and GLT activity indicating a detoxification effort. (A lot of researchers mislabel these plant toxins in question as “antioxidants” by misinterpreting cause-and-effect.)

    Can you drink coffee during intermittent fasting?

    When you abstain from food, you alleviate this detoxification burden on your liver and antioxidant enzymes, allowing your body to use that leeway to process its own wastes or breakdown products. Studies show that exposure to plant toxins such as alkaloids, found in chocolate and coffee beans and other bitter-tasting foods (an evolutionary apparatus meant to dissuade predators from consuming them) causes estrogen dominance by competing for CYP1A2, the Phase I detoxification enzyme necessary to metabolise both estrogen and alkaloids. By depleting CYP1A2 reserves in the liver by consuming alkaloid-rich foods, you make it harder for the liver to process other toxins and waste products (like hormones and such made in the body) that depend on the same enzymes. There is a basal amount of detoxification load on your body from everyday metabolism. This includes metabolites of hormones, neurotransmitters, among other things within your body.
    Drinking ANY kind of beverage, even if it’s zero calorie like black coffee or herbal tea or whatever miracle “detox” concoction your favourite health blogger preaches by will break your fast if internal detoxification is the goal.
    As for metabolic health, it’s not important that you are abstaining from all food as long as you remain in ketosis. So as long as you are restricting carbohydrate and alcohols, you should be fine. If you ate a fatty meal, the likes of eggs and butter, it won’t seriously break your “fast” as the magnitude of fat-mediated gluconeogenesis (breakdown of triglycerides yields glycerol which is converted to glucose) won’t be high enough to crank up hepatic de-novo lipogenesis. Hepatic DNL which is indicated by elevated levels of palmitic and palmitoleic acid (the main product of lipogenesis) is the root cause of fatty liver, dyslipidemia (high triglycerides/low HDL) and vascular problems such as atherosclerosis.
    If longevity and cancer risk reduction is your priority, mTOR must be deactivated which means no protein or carbohydrate containing foods. Fats are fine as they aren’t anabolic i.e. not insulinogenic. Bulletproof coffee i.e. coffee and butter made into a fat-in-water emulsion (sounds disgusting, I know, but people seem to swear by it) won’t break your “fast”, neither will other zero calorie foods such as zucchini or celery juice or whatever fancy tea you can afford. In many cases, the phytochemicals in these foods can synergistically deactivate mTOR helping push your cells even harder into autophagy.
    To conclude, fasting has far reaching implications for metabolic, endocrine and even immune system health – which is why I think everyone should try fasting. If the discipline of a fasting regimen is too much trouble for you to keep, I suggest the sporadic meal skipping strategy (lol). Fasting seems to be relatively safe as long as one doesn’t have any pre-existing conditions.

  4. Will Having Coffee Break Your Intermittent Fasting?
    What are the impacts of having coffee first thing in the morning.
    Do you reach out for a cup of coffee the first thing in the morning? Are you worried you will break your intermittent fast by having coffee? The short answer is YES!
    Having anything but water will break your fast because it triggers your liver to produce enzymes to help you with digestion.
    If you have not tried intermittent fasting yet, read this first:

    Now, that being said, if you can’t function, and feel like a zombie without coffee first thing in the morning, then this points out a problem with your circadian cycle .

    Can you drink coffee during intermittent fasting?

    The circadian cycle is a 24- hour in-built clock based on which our body functions. It is the rise and drop of certain hormones in the body based on the sun’s cycle. For example, you tend to get hungrier and lose self-control post 5 pm. Maintaining a healthy circadian rhythm is very important.
    You miss out on a lot of benefits of IF, if you do not first fix your circadian cycle.
    Ideally, if you sleep very well, and have a full night of rested sleep, you will never wake up and reach out for coffee. You won’t even feel like having coffee early in the morning. If you see yourself doing this often, you need to fix your circadian cycle.
    Wellness Tip for the day
    Coffee has become an integral part of so many people’s early morning habits. However, drinking coffee right after getting up is actually detrimental.
    Coffee elevates the stress hormone cortisol in the body, and further stresses the adrenal glands. This sure gives you a ‘ kick ’, but also unnecessarily triggers your ‘ fight or flight ’ response. Acting from this ‘ fight or flight ’ state interferes with glucose metabolism and leads to more body fat storage.
    Instead, work on fixing your sleep cycle. You will not reach out for coffee first thing in the morning.
    What does science say?
    In a recent study published in 2021, “ Beneficial Effects of Early Time-Restricted Feeding on Metabolic Diseases: Importance of Aligning Food Habits with the Circadian Clock ,” it was concluded that circadian rhythm is important in the regulation of physiological processes.
    Obesity, cardiovascular disease, and insulin resistance are all symptoms of circadian disorder.
    Another paper reflected the effect of caffeine in the reduction of insulin sensitivity in healthy people. It stresses how coffee is not helpful in any way to enhance glucose (blood sugar) control.
    If you aim to lose weight with intermittent fasting or are fasting for other health reasons, it would be a wise decision not to break your fast with coffee.
    A healthier option would be a cup of fruits and half a handful of dry fruits.
    Trust this helps,
    Roshni Sanghvi

  5. When I was on an intermittent fasting diet on ketogenic foods, from what I understand you may have water or black coffee. Dr. Sarah Solomon (YouTube her) has some amazing video resources on intermittent fasting and Keto lifestyle.

  6. Yes, black coffee is acceptable. You can even use a small amount of unsweetened non dairy creamer, but try to stay away from any sugars or sugar substitutes.

  7. Lots of videos on YouTube about this. This is the one I like the best: they actually drank coffee with milk etc. then tested their blood sugar.
    There are dozens of other similar videos. They all basically come to the same conclusion — a little bit of milk or creme etc. doesn’t make any difference.
    If you find one that says otherwise, please post it.

  8. You can if you wish. I, however, don’t do it because I am trying to avoid caffeine which will give me withdrawal headaches if I stop for a day or two. The best fasts are zero calories and only drinking water. Minimizing calories is the key here. I found that it did not help much and just made be want to eat something.


  9. It’s not optimum for HGH release which is the main reason intermittent fasting is so effective. Coffee drinking is associated with cortisol release. Cortisol is an antagonist to HGH.

  10. Yes, but I will add that anything you do every single day can make you have a sensitivity to that food/ drink. For example, I did bulletproof coffee (Kerry Gold butter, coffee and chocolate and MCT oil) everyday to help with my intermittent fasting and after a year and a half a blood test showed me to be sensitive to dairy, coffee, and chocolate (I had it as a mocha). So try and change it up as often as you can.

  11. Yes. Just dont over do. It’s more effective than if you’re eating. So slow and dilute is better than strong and fast. Btw espresso is lower in caffeine and higher in antioxidants. So good option is to slow sip espresso.

  12. I would say black coffee is OK, because it lacks any carbs, fats, or proteins (although it does contain metabolic compounds whoich do other thing to your body).
    Personally, when “intermittent fasting” I use an unsweetened nut creamer. It does contain fat, which technically isn’t fasting, but, we do what we must to get through the day with no food!

    Victor Allen’s

  13. It depends on how you take your coffee. Coffee with milk and/or sugar will affect the fast. Milk proteins and sugar need to be digested, and the sugar will also affect blood glucose levels. Coffee without milk or sugar will have a much lesser effect on the body. The key is to not overdo it. Generally limiting yourself to about 3 cups throughout the fast should be fine.
    It is recommended to have Green Tea during the fast and BCAA (branched chain amino acids) capsules (or powder).
    For complete info on IF I suggest you download Dr. John Berardi’s free 80 page PDF called ‘Experiments with Intermittent Fasting’ from here – It has extensive info on the different IF protocols as well as diet & exercise recommendations.

  14. Yes you can drink:
    black coffe
    black tea
    green tea
    sparkling water
    all these will not break your fast.
    Do not drink any sweet tasting drinks even zero calorie ones like Diet Coke.

  15. Many Intermittent Fasting followers do drink bullet proof coffee, coconut oil or ghee while in fasted state to feed ketones energy instead of burning own fat. If you are drinking regular coffee and not bullet proof, have them without sugar and no frequent than once every 4-6 hours.

  16. Yes. You can. The drink is permissible so long as it does not contain any claories. So the green coffee should not contain any sugar or additives containing calories.

  17. Black coffee is ok. Now acceptable is bulletproof coffee in the AM only. This coffee has ghee or butter and MCT or coconut oil. This is called a FAT FAST

  18. While intermittent fasting, there are three drinks other than water that you can have. Coffee or tea without sugar or milk and apple cider vinegar with warm water. This is what has worked for me.


  19. Reply
  20. It depends how strict you want to be.
    Fat doesn’t break a fast like glucose or protein but your body will still register it as calories.
    Coffee can elevate glucose and kick some out of ketosis.
    You could check your glucose and ketone levels with something like a ketomojo.

    Eight O’Clock


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