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No, most zero-calorie soda won’t end a fasting window by calories, but sweeteners can nudge insulin or appetite in some people.

Yes—under strict cellular-cleanup goals; for calorie-only fasts, most zero-cal energy drinks don’t break a fast.

No, a true zero-calorie drink doesn’t end a caloric fast; sweeteners may nudge metabolic signals in some people.

Yes, a 45-calorie intake breaks a fast metabolically; the effect on your goals depends on method and timing.

Yes—under a strict fast, 10 calories end the fast; with goal-based fasting, a tiny 10-calorie intake may still fit the plan.

Yes, 9 calories break a fasting state that requires zero energy intake, though some weight-loss approaches still tolerate it.

Yes, seven calories end a fasting state for strict metabolic goals like insulin control or autophagy.

Yes, five calories technically end a strict fast, though effects on insulin or fat burning are usually trivial for most goals.

Yes, short fasts may help liver fat through weight loss, but water-only fasts bring safety risks and aren’t a first-line therapy.

No, daily fasting doesn’t cause gout, but fasting states can raise uric acid and trigger gout attacks in prone people.