Diet soda contains no calories and no compounds that have measurable insulin effects. It’s not going to break a fast, but that doesn’t mean I like it. Try mixing a no-sugar drink mix, such as LMNT, with sparkling water.

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Is it okay to drink diet soda while fasting?

The goal of intermittent fasting is to remain in a “fasted state,” consuming no carbohydrates, fats, or protein for a set period of time. Because diet soda contains no calories, it is usually safe to consume while fasting.

Can you consume zero-calorie beverages while fasting?

Drinking moderate amounts of very low-calorie or zero-calorie beverages during a fasting window is unlikely to jeopardize your fast significantly. This includes beverages such as black coffee.

Is diet Coke bad for a fast?

Diet soda is a caloric-free beverage with no carbohydrates or protein. Since it does not cause any insulin response, diet soda technically does not break your fast.

Will diet soda cause ketosis to be broken?

Although a single diet soda will not knock you out of ketosis, the non-caloric artificial sweeteners in diet soda will raise insulin levels. As a result, drinking a lot of diet soda will knock you out of ketosis.

Is a Coke Zero going to break my fast?

Unfortunately for you diet soda fans, that is not the case! Calories aren’t the only culprits of fast-breaking; other ingredients in these fizzy beverages can derail your fasting goals. A large percentage of Zero users fast in order to lose weight, so ditch the diet soda!

What beverages do not end a fast?

The things you can drink or eat without actually breaking your fast are water, still or sparkling, most teas, and black coffee.

Is aspartame a fast-breaker?

Because aspartame is digested and metabolized in the body, it stimulates the gastrointestinal tract. In the GI tract, aspartame is broken down into phenylalanine, aspartic acid, and methanol. If you really want to live a long life, you should avoid aspartame.

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