Does Intermittent Fasting or The Keto Diet Affect Oral Health? 

added on: September 26, 2024

Intermittent fasting and ketogenic (keto) diets are popular choices for those looking to lose weight and improve their health. However, these dietary habits can have unexpected effects on your oral health. Whether fasting or cutting carbs, it’s important to be aware of how these choices might impact your teeth and gums. 

Oral Health Concerns with Intermittent Fasting

Intermittent fasting involves alternating between eating and fasting periods, which can benefit your health. However, it also introduces some challenges for your oral health:

  • Decreased Saliva Production

During fasting periods, your mouth may produce less saliva, essential for protecting your teeth from decay and gum disease. A dry mouth can increase the risk of cavities and other oral health issues.

  • Fasting Breath

Without regular meals, your body may start to break down fat for energy, leading to a condition known as “fasting breath.” This can result in an unpleasant odor that might be difficult to manage.

  • Increased Acidity

Extended periods without food can cause your mouth’s pH levels to drop, making your oral environment more acidic. This acidity can weaken tooth enamel and increase the risk of cavities.

If you notice these issues while practicing intermittent fasting, it’s essential to maintain good oral hygiene and consult our dental office in Kettering. We can guide you through keeping your mouth healthy while following your fasting routine.

Oral Health Concerns with The Keto Diet

The keto diet emphasizes high-fat, low-carbohydrate eating, which can help with weight loss and other health goals. However, it also has specific effects on your oral health that you should consider:

  • Keto Breath

As your body enters ketosis and burns fat for fuel, it produces ketones that can lead to a noticeable change in breath odor, often described as fruity or metallic bad breath.

  • Nutrient Imbalances

The keto diet’s restrictions might lead to a lack of certain nutrients, such as calcium and magnesium, vital for maintaining strong teeth and bones.

  • Gum Health Issues

A diet high in fats and low in carbs can alter the balance of bacteria in your mouth, potentially increasing the risk of gum disease if oral hygiene is not carefully managed.

Regular dental check-ups are crucial for those following a keto diet to ensure your oral health remains in top condition. Your dentist can help you manage any diet-related oral health concerns.

At our Kettering dental practice, we understand that diet and oral health are closely connected. Whether exploring intermittent fasting, trying the keto diet, or following another dietary plan, we’re here to help you maintain your oral health.

If you have questions about how your diet might affect oral health, our team is here to help. Contact our office today to schedule a visit. Your oral health is our priority, and we’re committed to helping you achieve and maintain it, regardless of your dietary choices.

About The Author
Dr. Eric Callejo

Dr. Eric Callejo was honored as the Clinical Instructor of the Year by the Ohio State University College of Dentistry and named Dayton Magazine's Top Dentist. He has certifications in Invisalign and IV sedation and is a certified provider of Botox and Juvederm. He completed residencies in general practice and implant dentistry, earned the highest accreditations from the Academy of General Dentistry and the Las Vegas Institute for Advanced Dental Studies, and completed continuing education in several dental institutions.


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