Can you drink coffee on water fast?

In this brief guide, we are going to answer the question “can you drink coffee on a water fast” with an in-depth analysis of whether or not you can drink coffee on water fast. Moreover, we are going to discuss the benefits of water fast and the effects of consuming coffee on water fast.

Can you drink coffee on water fast?

Yes, you can drink black coffee on water fast due to a long list of beneficial effects produced by it on the body during fasting. Besides helping the body to adapt faster to fasting, black coffee can also provide a lot of health benefits.

One cup (240 ml) of black coffee includes approximately 3 calories and trace amounts of protein, fat, and minerals. For most people, the nutrients in 1–2 cups (240–470 ml) of black coffee are insufficient to cause a major metabolic alteration sufficient to break a fast.

It is worth mentioning that some people claim that coffee reduces your hunger, making it easier to maintain your fast over time. This notion, however, remains scientifically unsubstantiated.

Overall, modest coffee consumption will not interrupt your water fast. Just make sure it’s black and free of any other substances.

It is worth mentioning that you can only drink black coffee on water fast. Bullet coffee or coffee with added milk, creamer, or sugar should not be consumed as they are high in calories and can disrupt water fast.

What is water fasting?

Water fasting is a fast during which nothing other than water can be consumed. Most of the water fasts last about 24-72 hours.

It is usually practiced on the instructions of doctors for some medical benefits or it is commonly done to get the benefits of fasting for health benefits. Some people aid their water fasts with non-caloric coffees to get other health benefits too.

What are the benefits of water fasting?

There are several benefits of water fasting among which some common benefits are the faster loss of weight, detoxification of the body, burning of fats, relaxation from mental stress, improving the digestive functions, and preventing chronic conditions.

Moreover, longer medically supervised water fasts may help people with high blood pressure lower their blood pressure.

Furthermore, insulin and leptin are hormones that regulate the body’s metabolism. Insulin aids the body’s ability to store nutrients from the bloodstream, whereas leptin aids the body’s ability to feel full. According to research, water fasting may make your body more responsive to leptin and insulin. These hormones are more effective when they are more sensitive.

Last but not least, water fasting appears to reduce the risk of chronic diseases such as diabetes, cancer, and heart disease.

What are the beneficial effects of coffee on water fast?

Metabolic benefits

According to research, coffee consumption may help lower chronic inflammation. According to some studies, increased coffee consumption is connected with a lower risk of metabolic syndrome, an inflammatory illness characterized by high blood pressure, excess body fat, high cholesterol, and excessive blood sugar levels.

Moreover, coffee consumption has also been linked to a lower risk of type 2 diabetes in studies. Furthermore, drinking up to 3 cups (710 ml) of coffee each day is related to a 19% lower risk of dying from heart disease.

Boosting weight loss

Coffee consumption during a water fast may also accelerate weight loss and help in managing the weight for a long duration. Black coffee is also a non-caloric drink and can serve as a good source of fluids to maintain hydration in place of diet sodas and fruit juices.

Moreover, energy expenditure and fat oxidation are also increased due to the presence of caffeine.

You can read the detailed chemistry of coffee and its analysis here.

What are some other fast friendly drinks?

There are a couple of drinks other than black coffee that can be used when you are on water fast. These drinks are calorie-free and keep you hydrated without disrupting your fast.

  1. Unsweetened tea
  2. Flavored water
  3. Sparkling water
  4. Lemon water

Which beverages should be avoided during fasting?

There are many beverages that you should avoid while fasting owing to their high caloric content.

  1. Soda
  2. Sweet tea (but you can drink green tea during fasting)
  3. Coffee with milk/creamer or sugar
  4. Bullet coffee
  5. Sports drinks
  6. Energy drinks
  7. Smoothies
  8. Milk 
  9. Alcohol
  10. Milkshakes


In this brief guide, we answered the question “can you drink coffee on a water fast” with an in-depth analysis of whether or not you can drink coffee on water fast. Moreover, we discussed the benefits of water fast and the effects of consuming coffee on water fast.


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