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Can You Drink Diet Soda While Fasting?

Keeping yourself hydrated is the key to a successful fast. If you are thirsty and do not want to drink the same water, again and again, you might be thinking of drinking some diet soda. However, if you want to know about whether you should drink soda while fasting, you have come to the right place.

The short answer to your questions is simply no you should not drink soda while fasting. This article deals with the elaboration of diet soda and why it can be harmful to your health, especially in a fast. It may have minimum calories, but ingredients like sucralose and aspartame can result in weight gain.

What Is Diet Soda?

Most of the people are familiar with different types of diet soda. However, you might know about the ingredients of every can or bottle of soda you might be drinking. Light drinks, sugar-free beverages, and zero-calorie drinks are all different names of a diet soda.

The primary selling point of a diet soda is that it consists of very few amount of calories. It does not have any carbs, sugars, fats, or cholesterol. Similarly, potassium, iron, vitamin, and protein are also absent from a diet soda.

The major components of a diet soda are:

  • Caffeine
  • Minerals
  • Vitamins
  • Preservatives
  • Artificial flavors and colors
  • Acids, carbonated water, and sweeteners


Why should you not drink Diet Soda While Fasting?

Now that you are familiar with the basics of diet sodas, it should be easy for you to understand why can’t you drink soda while fasting. It is due to the following two main reasons:

1.   Calories

Even though diet sodas claim that there is zero-calories drink, that is not entirely true. Researches, like the one from American Council on Science and Health, has shown that due to the use of artificial sweeteners in diet sodas, they contain some calories which can void your fast. Moreover, the use of flavors and carbonates water also adds to the number of calories.

Hence, due to drinking diet soda, you might end up consuming come calories during a fast, which will nullify your fast.

2.    Artificial Sweeteners

Other than contributing to the total calories of a diet soda, artificial sweeteners are harmful to your general health as well. Usually, the goal of the fasters is to have increased weight loss, enhanced immunity, and better health. However, flavors and sweeteners can lead you to gain weight instead of losing it.

According to a study from the British Journal of Nutrition, calorie-free beverages can make you hungrier for more calories, especially sugar. Similarly, another research has proven than hunger hormones are triggered by diet sodas, so you should avoid them during fasting and minimize their usage in everyday life as well.


You should avoid drinking a diet soda while fasting because though it may seem harmless to you, but it is loaded with a lot of harmful components for your body. Instead of drinking diet sodas to quench your thirst, you should drink lots of healthy and pure juices.