Here are a few simple tips to reduce bad breath while your body adjusts to a low-carb diet. Ketones are usually harmless and released from the body through exhalation and urination. Since acetone is an ingredient in some nail polishes, your breath smelling like nail polish remover in particular can indicate a state of ketosis. On the one hand, this indication that you’ve entered ketosis may be reassuring.
This is one reason people get side effects on low-carb diets, such as lightheadedness, fatigue, headaches, and even constipation. But if you want to get into ketosis — which is essential for a ketogenic diet — then this level of intake may be excessive.