How Fasting Impacts Blood Sugar
If you consume fewer calories than you burn, you’ll start to lose weight. That’s common knowledge. But intermittent fasting uses a different method to help you lose weight, besides reducing your calorie intake during fasting periods.
To benefit from an intermittent fasting diet, you need to watch what you consume not just during the fasting window but also during eating hours. Be consistent, stay hydrated, and be sensible when consuming calories. Eating a healthy, balanced diet will support weight loss, while binging on unhealthy foods between fasting periods could lead to further weight gain.
How I Drink My Coffee While Fasting:
If youre an avid coffee drinker like me, !
One of the questions I get the most frequently is, what actually breaks a fast? and Im here to help! Its hard to know what drinks you can have, like coffee, while still fasting. Upon further research, I found that this is actually quite a controversial topic as many have differing opinions on what breaks a fast. Today, Im sharing what works for me and the best drinks for intermittent fasting.
Foods You Can Eat While Fasting
Some experts say as long as you keep your carbohydrate intake below 50 grams per day during a fast, you can maintain ketosis .
Below are some foods and beverages you can consume while fasting.
- Water. Plain or carbonated water contains no calories and will keep you hydrated during a fast.
- Coffee and tea. These should mostly be consumed without added sugar, milk, or cream. However, some people find that adding small amounts of milk or fat can curb hunger.
- Diluted apple cider vinegar. Some people find that drinking 12 teaspoons of apple cider vinegar mixed into water can help them stay hydrated and prevent cravings during a fast.
- Healthy fats. Some people drink coffee containing MCT oil, ghee, coconut oil, or butter during their fast. Oil breaks a fast, but it wont break ketosis and can tide you over between meals.
- Bone broth. This rich source of nutrients can help replenish electrolytes lost during long periods of only drinking water.
Remember that foods and drinks containing any calories like bone broth and the healthy fats listed above will technically break your fast.
However, small amounts of these low-carb, high-fat, moderate-protein foods wont throw your body out of ketosis .
SUMMARY
Some people choose to consume small amounts of certain foods and beverages while fasting, such as bone broth or healthy fats. Others consume calorie-free beverages.
You May Like: How Many Calories In Intermittent Fasting
What Is Intermittent Fasting
Intermittent fasting is an eating pattern that alternates periods of eating with periods of either not eating or taking in minimal calories. It emphasizes when you eat rather than what you eat.
Even though it has recently gained mainstream attention, intermittent fasting isnt new. People have practiced periods of fasting throughout history, such as for spiritual, health, or survival reasons .
The intent of intermittent fasting isnt necessarily only to restrict calories, but also to allow your body to focus on maintenance and recovery, rather than digesting.
Many fasting patterns incorporate regular 12- to 16-hour periods of fasting into each day, while others include fasting for 24 or 48 hours once or twice per week.
When you fast, your body undergoes a number of metabolic changes. After some time, fasting causes your body to enter ketosis, a state in which fat is used for energy when carbohydrates are unavailable (
Summary
Intermittent fasting rotates periods of fasting and periods of eating. Its often used for health purposes like weight loss and chronic disease prevention, though its been used historically for other reasons.
What Can You Drink During Intermittent Fasting

Tags: intermittent fasting
Intermittent fasting is one of the worlds most popular health trends thanks to powerful benefits like reduced inflammation, cellular renewal, weight loss, and longevity. Unlike conventional diets, with IF its not so much about what you eat, as when you eat. This leads many people to wonder what you can drink during intermittent fasting periods when not eating.
Fortunately, there are numerous beverages including some that kill cravings permitted during fasting periods.
In this article, well explore exactly what you can and cant drink during intermittent fasting.
Heres a shortlist of beverages you can drink while fasting:
Also Check: What Are The Benefits Of Intermediate Fasting
Can I Have Coffee With Cream During A Fast
This depends on how strictly youre practicing IF.
If you have an ample amount of weight to lose, you may want to be stricter and stick with black coffee only on your fast. Some people swear by bulletproof coffee , as its medium-chain triglycerides are thought to speed up the process of getting into ketosis.
Ful Sparkling Spirulina Drinks
Spirulina is one of the essential superfoods that nutritionists recommend to include in every diet. While you cannot eat it as a dietary supplement during the fasting windows, you can consume it via FUL® sparkling spirulina drinks. These bottled and ready-to-drink beverages are low in calories, so they dont cause blood sugar spikes. On the contrary, according to a paper written by P. D. Karkos, S. C. Leong, C. D. Karkos, N. Sivaji, and D. A. Assimakopoulos, spirulina helps to control healthy blood sugar and blood pressure levels. Studies also show that spirulina is also perfect for body detox, as its high in antioxidants and helps to maintain pH balance.
FUL® sparkling spirulina drinks also come in handy when you crave sugary soft drinks, as you can replace them with a healthy and flavourful beverage that delivers all the health benefits of spirulina without any of its unpleasant taste. Plus, spirulina also helps you feel full for a longer time and suppresses the appetite.
You May Like: Can I Lose Weight By Intermittent Fasting
Benefits Of Energy Drinks On An Intermittent Fast
Beginners of intermittent fasting might find it hard to jump into a fasting regime and not have energy for their daily activities thereafter. Therefore, consuming an energy drink before you begin your fasting period might provide you with the perfect amount of energy to last you throughout the day.
It makes perfect sense, if youre eating less, you may find that you are a little weaker or lacking energy at certain times in the day.
Of course, remember to drink an energy drink thats low in sugar, contains a sensible amount of caffeine, and is low in calories in order for your intermittent fasting to be worthwhile and to make sure that you achieve your goals.
Aren’t Artificial Sweeteners Bad
Now with a lot of blogs, a lot of perspectives, and a lot of misinterpreted studies… people may scare you into believing that artificial sweeteners are evil and should be avoided.
It’s important to note that context matters.
When people say it’s bad: compared to what?
When they say they should be avoided: what drew you to this conclusion?
Let’s explore two myths pertaining to artificial sweetener concerns.
Read Also: What Can You Eat When Fasting
What Drinks Should I Avoid While Fasting
During your eating window, there are few limits on what you can or cant drink. Of course, its always best to avoid drinks with sugar or artificial sweeteners. If your intermittent fasting goal is to lose weight, theres no rule that says you cant enjoy the occasional soda, juice, or even a milkshake during your eating window. During your fasting hours, however, its another story.
Steer clear of any drink with more than nine calories. But, dont be fooled by diet soda, despite their no-cal or low-cal sales pitch, they can spike your insulin levels and wreak havoc on your fasting plans. Below are some beverages which might sound fasting friendly, but its best if you dont drink them.
The Problem With Regular Sodas Isnt Just The Calories
If youre drinking two 12-ounce cans of regular Coke each day, you could eliminate 280 empty calories by switching to a zero-calorie alternative. Over a month, thats 8,400 fewer calories, enough to lose almost two and a half pounds. So, whats the catch?
One worry is that artificially sweetened diet sodas may create a craving for sweet, high-calorie foods. So, even as calorie counts drops from zero-calorie sodas, consumption of other foods and drinks might add back even more. In rodent studies, at least one artificial sweetener has been found to damage a part of the brain that tells the animal when to stop eating.
And a number of studies in humans have actually found a tendency toward weight gain among people drinking artificially sweetened beverages. But research has been mixed: other studies have found that artificially sweetened low-calorie beverages can help with weight loss.
One factor complicating the study of zero-calorie beverages and weight loss is called reverse causation. People at risk for obesity tend to choose these beverages, making it appear that these drinks are to blame.
Of course, there are other health concerns associated with artificial sweeteners, including a possible increase in the risk of certain cancers, cardiovascular disease, and kidney problems. The evidence for this isnt strong enough to be sure, though.
Read Also: Which Fasting Is Best For Weight Loss
Is Fasting Right For You
Many people try to lose weight by fasting, but if this isnt something you can do indefinitely and if the plan isnt sustainable you may gain the weight back.
Intermittent fasting can aid weight loss by making you consume fewer calories overall. This is especially true if you eat small portions and eat well-balanced meals when you arent fasting.
It might be too much for old age individuals, diabetics, and others who take medications at specific times. Even if you dont follow the intermittent fasting technique to the letter, this particular report notes that incorporating just a few strategies will help you maintain a healthy weight and metabolism.
Getting enough sleep is one way to support improved health, eating, and weight loss. According to Consumer Reports, sleep is also a vital aspect of your health and weight loss quest.
According to the American Academy of Sleep Medicine and the Sleep Research Society, adults require at least seven hours of sleep per night. Sleep deprivation can lead to overeating, resulting in weight gain and metabolic problems.
Can You Drink Or Eat Anything While Fasting

Yes, you can drink while fasting but you cannot eat while fasting. All solid foods have calories and therefore, they will break your fast.
After a 12-hour fast, I sometimesdrink a cup of Bulletproof Coffee to push me through 4 to 5 additional fasting hours.
Bulletproof coffee is not a zero-calorie drink however, there have been studies that have shown that the health benefits outweigh the fast, and that is why after 12 hours, I choose to extend the fast with it.
Bulletproof coffee does not cause an insulin spike, and theres additional research showing that your fasting continues even though it has calories. Each body is different, and therefore, its something to test out.
Don’t Miss: Best Free Intermittent Fasting Diet Plan
Gentle Foods To Break A Fast
When youre ready to break your fast, its best to ease out of it. Toward the end of your fast, you might want to introduce small portions of foods that are more easily digested, so you dont overwhelm your digestive system.
Breaking your fast with foods that are especially high in fat, sugar, or even fiber can be difficult for your body to digest, leading to bloating and discomfort.
Foods and drinks that can be even more shocking to your system after a fast include those like a greasy cheeseburger, slice of cake, or soda. Even high-fiber raw produce, nuts, and seeds may be difficult to digest.
On the other hand, nutrient-dense foods that easy to digest and contain a bit of protein and some healthy fats can break your fast more gently.
Below are a few examples of what to eat to break your fast.
Breaking your fast with healthy foods that may be better tolerated can help replenish important nutrients and electrolytes while easing food back into your diet.
Once youre tolerating gentler foods, add in other healthy foods like whole grains, beans, vegetables, nuts, seeds, meat, poultry, and fish and return to eating normally.
Can You Drink Diet Soda While Intermittent Fasting
Technically speaking, most diet sodas that have zero calories will not break a fast, explains Autumn Bates, a certified clinical nutritionist in Manhattan Beach, California. However, if your goal is to lose weight, drinking diet sodas can still work against your weight loss goals by increasing sugar cravings and hunger throughout the day.
Although most diet drinks come without calories, some humans might secrete insulina hormone that regulates fat storagein reaction to the sweet taste even though its not sugar, Bates says. She points to an April study in the Journal of Family Medicine and Primary Care that suggests a link between artificial sweeteners and insulin resistance.
Bates adds that some people might also experience higher levels of hunger and more sugar cravings, especially later in the day, after consuming artificial sweeteners, according to a 2016 study in Cell Metabolism.
The challenging part, Bates notes, is that not all people secrete insulin after eating or drinking something that includes artificial sweeteners, just as not everyone that drinks diet soda experiences a case of the hangries after drinking a can.
The jury is still out, however, we know now that in general diet sodas have not been shown to generally be supportive of weight loss goals, she says.
rez-art/Getty Images
Recommended Reading: How Does Water Fasting Work
What Exactly Can You Drink While Intermittent Fasting Without Breaking Your Fast
RDs explain what beverages are okay and which to avoid.
Intermittent fasting , an eating style that’s typically paired with high-protein or keto diets, begs a lot of questions, especially if you’re new to it. You might be curious what type of fasting schedule you should try, what the legit health benefits are, whether you’ll experience any side effects, and what kind of weight-loss results you can expect. Another common question is whether you can have beverages, like coffee and water, during your fasting periods.
The short answer is: It depends on the beverage and the type of IF diet you’re following . But a good rule of thumb is to avoid any drinks that have any calories while you’re fasting, says New Jersey-based dietitian Erin Palinski-Wade, RD, author of 2 Day Diabetes Diet.
Consuming any carbs, proteins, or fats when you’re trying to maintain a fasted state can negate the weight-loss benefits of intermittent fasting, she says. IF diets are also thought to lead to a reduction in insulin resistance and help control blood sugar, both of which may reduce your chances of becoming diabetic. These benefits can be quickly canceled out if you consume too many liquid calories during a period of what should be a fasted state.
More From Women’s Health
Here’s what you should know about all some of the most popular drinks you might *want* to consume while doing intermittent fasting, and whether or not they’ll take you out of a fasted state.
Consuming Energy Drinks On An Empty Stomach
Energy drinks can be pretty bad if you consume them on an empty stomach. They contain strong ingredients that can be bad for your health if there is nothing to protect your stomach.
Keeping that in mind, its not the best idea to consume energy drinks if your stomach is empty. The same goes for you if youre in the middle of fasting.
You May Like: Which Blood Tests Require Fasting
Is Fasting Safe For Everyone
Not everyone is suited to fasting.
Before beginning a new dietary regimen, see your doctor or a healthcare expert, especially if youre under the age of 18, have a pre-existing medical condition , or taking medications.
People who are underweight, have an eating disoder, or are pregnant or breastfeeding should avoid fasting.
What Breaks A Fast And What Doesn’t
Robb WolfROBB WOLF
Im frequently asked what breaks a fast. People want to know if coffee breaks a fast, if MCT oil breaks a fast, and if toothpaste breaks a fast.
I wrote this article to enshrine my thoughts online. That way, I can refer all future queries to one place.
To be honest, I think questions of this nature get too much airplay. When I saw does Diet Coke break a fast? on a recent podcast headline, I was unable to suppress an eye roll.
Does Diet Coke have calories? Does it have amino acids? Does it contain anything to significantly raise insulin levels and interfere with fat-burning? No. I do understand that artificial sweeteners can enhance insulin secretion or alter appetite regulation in unfavorable ways, but fasting is not the context in which you should be worried about all this.
Im not endorsing Diet Coke. What Im saying is: when someone asks if x, y, or z breaks a fast, theyre really asking if it interferes with the potential benefits of fasting.
And the benefits are why folks fast in the first place, right? People fast to
And many of the foods and drinks people worry about dont meaningfully interfere with the potential benefits above. I remind you: fasting is a tool. But like with anything, more is not always better and not all tools are appropriate for all jobs. So, although I appreciate the various possible benefits of fasting, I think some folks are doing too much. More on that in a separate installment.
Also Check: What Is The Best Diet For Intermittent Fasting