Keto diet’s impact on dental health and oral hygiene.

Keto Diet’s Impact on Dental Health and Oral Hygiene

The ketogenic (keto) diet has gained immense popularity in recent years, primarily for its potential weight loss benefits. However, many people are curious about how this high-fat, low-carb diet may impact their dental health and oral hygiene. In this article, we’ll explore the effects of the keto diet on your teeth and gums, and provide specific answers and solutions to maintain optimal oral health while following this diet.

What is the Keto Diet?

The ketogenic diet is a high-fat, low-carbohydrate diet that aims to shift the body’s primary source of energy from carbohydrates to fats. This metabolic state, known as ketosis, encourages the body to burn fat for fuel instead of glucose. The standard keto diet typically consists of 70-80% fat, 20-25% protein, and 5-10% carbohydrates.

Positive Effects of the Keto Diet on Dental Health

There are several ways in which the keto diet can positively impact your dental health:

1. Reduced Sugar Intake

One of the main benefits of the keto diet is the significant reduction in sugar intake. Consuming high amounts of sugar can lead to tooth decay and cavities, as the bacteria in your mouth feed on sugar and produce acids that erode tooth enamel. By limiting your sugar intake, you can reduce the risk of developing dental issues related to sugar consumption.

2. Decreased Plaque Formation

Carbohydrates, particularly simple sugars, are known to contribute to plaque formation on teeth. Plaque is a sticky film of bacteria that can lead to tooth decay and gum disease. Since the keto diet is low in carbohydrates, it may help reduce plaque buildup and promote better oral hygiene.

3. Improved Gum Health

Inflammation is a significant factor in gum disease, and research suggests that a high-fat, low-carb diet like the keto diet may have anti-inflammatory effects. A study published in the Journal of Clinical Periodontology found that a low-carb diet could improve gum health and reduce inflammation in people with periodontitis, a severe form of gum disease.

Negative Effects of the Keto Diet on Dental Health

While the keto diet has some potential benefits for dental health, it’s essential to be aware of the potential drawbacks as well:

1. Keto Breath

One of the most common side effects of the keto diet is bad breath, often referred to as “keto breath.” This unpleasant odor is caused by the production of acetone, a byproduct of ketosis. While keto breath is not directly harmful to your teeth or gums, it can be an unpleasant experience for you and those around you.

2. Dry Mouth

A ketogenic diet can sometimes lead to dehydration, which may result in dry mouth. Saliva plays a crucial role in maintaining oral health, as it helps wash away food particles and bacteria, neutralize acids, and remineralize tooth enamel. A lack of saliva can increase the risk of tooth decay and gum disease.

3. Acidic Foods

Some popular keto-friendly foods, such as coffee, tea, and citrus fruits, are acidic and can contribute to enamel erosion if consumed in large quantities. It’s essential to be mindful of your consumption of acidic foods and beverages while following the keto diet.

Maintaining Dental Health on the Keto Diet

To ensure optimal dental health while following the keto diet, consider these tips:

1. Stay Hydrated

Drinking plenty of water is crucial for overall health, and it’s especially important for maintaining saliva production and preventing dry mouth. Aim to drink at least eight 8-ounce glasses of water per day.

2. Practice Good Oral Hygiene

Regardless of your diet, maintaining a consistent oral hygiene routine is essential for preventing dental issues. Brush your teeth at least twice a day with fluoride toothpaste, floss daily, and visit your dentist for regular checkups and cleanings.

3. Use a Tongue Scraper

Using a tongue scraper can help remove bacteria and food particles that contribute to bad breath. Incorporate tongue scraping into your daily oral hygiene routine to help combat keto breath.

4. Chew Sugar-Free Gum

Chewing sugar-free gum can help stimulate saliva production, which can help combat dry mouth and reduce the risk of tooth decay. Look for gum containing xylitol, a natural sweetener that has been shown to help prevent cavities.

5. Limit Acidic Foods and Beverages

Be mindful of your consumption of acidic foods and beverages, such as coffee, tea, and citrus fruits. Rinse your mouth with water after consuming acidic items to help neutralize the acids and protect your tooth enamel.


The keto diet can have both positive and negative effects on dental health and oral hygiene. By reducing sugar intake and potentially decreasing plaque formation and inflammation, the keto diet may promote better oral health. However, it’s essential to be aware of potential drawbacks, such as keto breath and dry mouth. By staying hydrated, practicing good oral hygiene, and being mindful of your consumption of acidic foods, you can maintain optimal dental health while following the keto diet.

Amanda Dawn

HI! I'm Amanda. A trained chef, nutritionist, and writer who is passionate about helping people live a healthy lifestyle. I lost 75 lbs in my journey and I love to help others enjoy great, wholesome food!

Recommended Articles