Slightly different to regular bad breath or halitosis, ‘keto breath’ has it's own category of Bad Breath. This is where people who are on a keto diet, or another low-carb diet, experience bad breath that smells like rotten fruit or nail polish remover (acetone) or a cat litter box (ammonia). This can cause frustration, but once you understand why it happens and how to help it, you will have a healthy fresh breath in no time! The release of Ketones: Once your body reaches a state of Ketosis [this occurs when the liver uses the fat present in the body for energy source, producing “ketones” in the process] ketones are released. One type of ketone called acetone produces a foul smell like rotten fruit. Whilst in Ketosis these acetones manifest in your breath and urine and causing the unpleasant smell. Excess Protein: Protein consumption usually increases on a keto diet, to replace the carbs that have been cut out of the diet. When the body metabolizes protein, ammonia is produced. ...