Can I Drink Instant Coffee While Fasting? The Facts and Considerations

I love starting off my day with a cup of coffee. The aroma, the warmth, and the energy boost it provides are all reasons why I reach for that cup of joe every morning. Recently, I’ve been exploring intermittent fasting as a way to improve my overall health and well-being. However, one question that has constantly popped up in my mind is, “Can I drink instant coffee while fasting?” In this article, I will dive into the facts and considerations surrounding this topic to help shed some light on whether or not instant coffee can be consumed during fasting periods.

Understanding Intermittent Fasting

Before we delve into the specifics of whether or not you can drink instant coffee while fasting, let’s first discuss what intermittent fasting entails. Intermittent fasting is an eating pattern that alternates between periods of fasting and eating. It does not focus on what you eat but rather when you eat.

During the fasting periods, no caloric intake is allowed, while the eating periods consist of regular meals or a limited feeding window. This pattern can range from fasting for 16 hours a day and eating within an 8-hour window, to fasting for a full 24 hours twice a week.

The Science Behind Intermittent Fasting

Intermittent fasting has gained popularity due to its potential health benefits. Studies have suggested that intermittent fasting may aid in weight loss, improve insulin sensitivity, reduce inflammation, and even promote longevity. Additionally, it has been shown to increase autophagy, which is the process through which the body removes damaged cells and recycles their components.

This eating pattern can fit into a wide range of lifestyles, making it a popular choice for many individuals looking to improve their overall health. However, when it comes to what you can consume during fasting periods, there is some debate.

The Role of Instant Coffee

Now, let’s get to the heart of the matter – can you drink instant coffee while fasting? The answer depends on your goals and the type of fasting you are following.

What is Instant Coffee?

Instant coffee, as the name suggests, is made by brewing coffee beans, then removing the water to create a powder or granules that can be rehydrated with hot water. It offers convenience and speed, making it a popular choice for those in a hurry or seeking an easy cup of coffee.

Caloric Content of Instant Coffee

When it comes to fasting, calories are the main concern. Consuming any substantial amount of calories during a fasting period can signal the body to exit the fasting state and start the digestive process.

Fortunately, instant coffee is a virtually calorie-free beverage. A typical serving of instant coffee contains only about 2 calories. This minimal caloric content suggests that drinking instant coffee is unlikely to break a fast or hinder the potential benefits of intermittent fasting.

Possible Considerations

While instant coffee itself may not significantly impact your fasting state, there are a few considerations to keep in mind.

Firstly, some individuals prefer to consume only water and abstain from any food or beverages during fasting periods. This approach is known as a water-only fast and aims to maximize the potential autophagy benefits of fasting. If you choose to follow a water-only fast, it is best to avoid instant coffee or any other beverages, even if they are low in calories.

Additionally, some experts argue that the slight metabolic response triggered by consuming coffee, even without added calories, may disrupt the fasting state for some individuals. However, this response is generally minor and likely to have a negligible effect on the overall benefits of intermittent fasting. Ultimately, the decision to include instant coffee during fasting periods comes down to personal preference and individual goals.

Alternatives to Instant Coffee

If you are concerned about the potential effects of instant coffee on your fasting state, or simply want to explore other options, there are alternatives available.

Black Coffee

Black coffee is a popular choice among intermittent fasters. Like instant coffee, it is virtually calorie-free. However, black coffee is made by brewing coffee beans, resulting in a fresher and more robust flavor compared to instant coffee. It can be enjoyed hot or cold, depending on your preference.

Herbal Tea

Herbal teas, such as chamomile, peppermint, or green tea, are another excellent option for fasting periods. These teas are generally calorie-free and offer various health benefits. Green tea, in particular, is known for its antioxidant properties, which may complement the goals of intermittent fasting.


Lastly, if you prefer to keep your fasting periods completely food and beverage-free, water is the way to go. Staying hydrated is crucial during fasting periods, as it helps maintain proper bodily functions and aids in digestion once eating windows open.


In conclusion, whether or not you can drink instant coffee while fasting depends on your fasting goals and preferences. Instant coffee, with its low caloric content, is generally considered acceptable during fasting periods. However, those following a water-only fast may choose to avoid all beverages, including instant coffee.

Ultimately, the decision to include instant coffee or any other beverage during a fast should be determined by your individual goals and how your body responds. If you are unsure, it may be beneficial to consult with a healthcare professional or a registered dietitian who can provide personalized guidance based on your specific situation. Remember, intermittent fasting is a flexible approach, and finding what works best for you is key to achieving success.

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