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Diet soda is calorie-free, but sweeteners may nudge insulin and hunger, so it can interfere with fasting goals like ketosis or autophagy.

Yes, a ginger shot breaks a strict fasting window because it contains calories and can nudge insulin.

No, diet pepsi doesn’t break a calorie fast, but sweeteners may hinder fasting goals for some people.

Yes, a protein shake breaks an intermittent fast because amino acids and calories interrupt fasting physiology.

No—diet soda has zero calories, so Diet Coke won’t break a calorie-based fast; stricter fasts that ban sweeteners are a different story.

Yes—Celsius has calories and sweeteners, so by strict fasting rules Celsius breaks a fast.

Yes, cane sugar breaks a fast by adding calories and triggering insulin, which shifts the body out of a fasting state.

Yes—diet sugar with no calories usually keeps an intermittent fast intact, but fillers or hormonal effects can work against strict goals.

No—Coke No Sugar has zero calories, so for most fasting goals it won’t break a fast.