Question: why is coke zero bad for keto?
Answer: Maintaining ketosis on the keto diet For context, one 12-ounce (355-mL) can of sugar-sweetened Coca-Cola Classic has 39 grams of carbs, whereas Coke Zero has none (4, 5). Consuming too many carbs on the keto diet can take you out of ketosis and back into breaking down carbs for energy.