Brushing Teeth While Fasting: Does Toothpaste Break It?

Does Toothpaste Affect Intermittent Fasting?

Intermittent fasting has been a growing health trend that revolves around alternating periods of eating and fasting for various health benefits such as weight loss, improved metabolic health, reduced inflammation, and lower risk of chronic diseases Fasting Books. Toothpaste, on the other hand, is important for the well-being of our teeth, gums, and tongue. However, questions arose as to whether toothpaste breaks or affects intermittent fasting.

The immediate response is that toothpaste does not break the fast. Consuming a small amount of toothpaste while brushing your teeth will likely not raise insulin levels or disrupt the metabolic state of ketosis, which is the hallmark of intermittent fasting. The rigorous saliva production while brushing could, in fact, help your breath and even prevent dry mouth, which is a bonus during fasting periods.

The Benefits of Brushing Teeth While Fasting

Brushing with toothpaste during fasting periods is safe and actually beneficial for oral hygiene. Oral hygiene is essential in fortifying our immune system and reducing bacteria growth in the mouth.

The Benefits of Intermittent Fasting

Intermittent fasting has numerous health benefits, including prompting the metabolic state of ketosis, the body’s way of burning fat for fuel instead of carbohydrates. This way, it helps to burn fat, reduced inflammation, improved brain health, regulated hormones, digestion, and reduced the risk of chronic diseases.

Tips for Intermittent Fasting

To achieve the best from intermittent fasting, it’s vital to follow the guidelines and avoid overdoing it. Eating a balanced diet full of healthy fats, proteins, and carbohydrates, staying hydrated, getting enough sleep, and regular exercise could help reap the maximum benefits of intermittent fasting.


Toothpaste is an essential aspect of any oral care routine, and brushing while fasting has no negative effects on fasting periods. Avoiding mouthwash during fasting periods is also necessary as some mouthwashes have ingredients that could affect your fast. Intermittent fasting coupled with a balanced diet, hydration, exercise, and sleep is an excellent way to attain overall health benefits and prolong your lifespan while praying that nothing else was ingested while sleeping or brushing your teeth.

Is it permissible to brush your teeth with toothpaste while fasting?

Does consuming toothpaste during a fasted period constitute breaking the fast?

Unless you consume an excessive amount of toothpaste, it is unlikely that the small amount used while brushing your teeth will have an effect on your blood sugar and insulin levels and will not break the fast.

Is it safe to consume toothpaste while doing intermittent fasting?

Swallowing a small amount of toothpaste will likely not have any measurable effect on insulin and blood glucose levels, so it won’t disrupt your fast and cause your body to switch from fat burning mode.

Does using mouthwash interfere with intermittent fasting?

Using Listerine mouthwash will not break a fast because it contains only 21.6% alcohol, which is not enough to be absorbed and cause a fasting period to end.

brushing teeth while fasting does toothpaste break it 17 04 2023 5

brushing teeth while fasting does toothpaste break it 17 04 2023 7

Are you interested in other ways of maintaining excellent health and wellness? Visit Fasting Books now for more information!
      Shopping cart