Can I drink coffee on a water fast

  • By: Rob
  • Date: November 6, 2022
  • Time to read: 5 min.
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So you’re considering doing a water fast, but you’re not sure if you can drink coffee. Maybe you’ve heard that coffee is a diuretic and will make you lose more water than you’re taking in. Or maybe you’re just not sure if coffee is allowed on a water fast. Let’s take a look at, can I drink coffee on a water fast?

Drinking coffee while water fasting is perfectly safe and can actually help to increase your energy levels. Just be sure to choose a lower-acid brew, avoid adding any additional calories, and drink plenty of water in between cups to stay hydrated.

If you’re doing a medical fast or are under strict doctor’s orders, then you should check with them before drinking coffee. Other than that, there’s no reason to avoid coffee while fasting.

Can I drink coffee on a water fast

Coffee is a diuretic, so it will make you urinate more often. This will cause you to lose more water and become dehydrated. So, as long as you’re drinking plenty of water throughout the day, coffee is fine to drink on a water fast.

It is generally best to avoid caffeine altogether while water fasting, as it can lead to headaches and other unpleasant side effects. Coffee, even decaffeinated coffee, has small amounts of caffeine. If you are trying to avoid caffeine, it is best to avoid coffee entirely.

What Coffee to Drink after Dinner

You may be able to drink a small cup of coffee while water fasting, but no more than 5 cups (40 oz) per day. If you do drink coffee, make sure to also drink plenty of other fluids and eat foods high in water content to offset the diuretic effect of the coffee.

Can you drink black coffee on a water fast

Coffee is technically a liquid, so it won’t break your fast. However, it is important to remember that coffee does contain caffeine and other compounds that can have an effect on your body, so you should drink it in moderation.

Black coffee is not only low in calories, but it also helps to boost metabolism and suppress appetite. In addition, coffee is a rich source of antioxidants, which can help to protect the body against disease. For these reasons, black coffee is an excellent choice for those who are looking to maintain their weight while fasting.

So, drinking black coffee while water fasting, it’s definitely possible. Just be sure to drink it in moderation and listen to your body to see how it affects you. And, as with anything else, be sure to consult with your doctor before starting any new fasting regimen.

What liquids will not break a fast

There are a few different liquids that people often ask about when it comes to fasting. Here is a list of some of the most common liquids and whether or not they will break a fast:

  • Water: No, water will not break your fast. You can drink as much water as you need to stay hydrated while fasting.
  • Coffee: Coffee is also fine to drink while fasting. Just be aware that it contains caffeine and other compounds that can have an effect on your body.
  • Tea: Like coffee, tea also contains caffeine. However, herbal teas are generally considered to be okay to drink while fasting.
  • Juices: Juices made from fruits and vegetables are okay to drink in moderation while fasting. However, avoid juices that are high in sugar or other sweeteners.
  • Bone broth: Bone broth is a great choice for those looking for a nutrient-rich drink while fasting. Bone broth contains minerals, amino acids, and other compounds that can help to support the body during a fast.

  • Soda: Sodas, even diet sodas, are not recommended for fasting. They can cause bloating and gas, and sugar or artificial sweeteners can trigger cravings.
  • Alcohol: Alcohol is not recommended for fasting. It can dehydrate the body and may cause other side effects.

Just be sure to avoid sugary drinks, alcohol, and sodas while fasting. Drink plenty of water and other calorie-free liquids to stay hydrated and help your body to function properly.

I wrote a couple of articles on questions people have surrounding coffee and fasting. You can check out if fasting while drinking coffee with heavy cream is ok or not. Another one I did was ask if coffee creamer will break a fast. Worth checking out if you are worried about the do’s and don’ts.

How to drink coffee while fasting

If you’re someone who likes to drink coffee but is also trying to stick to a fasting schedule, there are a few things you can do to enjoy your cup of joe while still adhering to your fasting plan.

First, it’s important to choose the right type of coffee. A lower-acid brew will be easier on your stomach, so opt for a dark roast or cold brew if possible.

Second, avoid adding any additional calories to your coffee by skipping the milk and sugar. Some people like to add a splash of almond milk o­n their coffee while fasting, but this is technically breaking the fast. If you want to maximize the benefits of your fast, stick to black coffee. 

And finally, be mindful of your caffeine intake. Too much caffeine can lead to dehydration, so stick to three cups (24 oz) per day.

What to expect when drinking coffee o­n water fast

When you’re drinking coffee while water fasting, you may notice that you feel more alert and have more energy. This is because caffeine is a stimulant and can help to increase your heart rate and blood pressure.

You may also find that you’re more irritable and have difficulty concentrating. This is because your body is going through withdrawals from not having any food or water. If you’re feeling particularly sluggish, you can try adding a little bit of honey or lemon to your coffee.

It’s important to remember that coffee is a diuretic, which means it will make you urinate more frequently. Make sure to drink plenty of water in between cups of coffee to stay hydrated. Listen to your body and stop consuming caffeine if you start to experience any negative side effects.


So, can I drink coffee on a water fast? Water fasting is a great way to detox and lose weight, but there are some things you should know before starting. First and foremost, it’s important to drink plenty of water while fasting. 

You can drink coffee on water fast. However, it’s important to keep in mind that coffee isn’t exactly healthy food, so you should only drink it in moderation while fasting.

Be sure to avoid sugary drinks, alcohol, and sodas while fasting. These can break your fast or cause other side effects. Stick to black coffee to maximize the benefits of your fast.

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