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Dr. Edwards' Blog

Too Many Carbs Could Lead to Too Much Gum Disease - May 29

A diet lower in carbohydrates might actually improve your smile.  A recent study in Germany looked at the oral health of patients with gingivitis ("gingiva" – gum tissues, "itis" – inflammation) after four weeks on a special diet. In Germany, as in the rest of the Western world, over 45% of people's diet consists of carbohydrates. For some people, eating too many carbs leads to chronic inflammation, which is reflected in the health of your gums and teeth.

Foods can be rated on the glycemic index, a measure of the speed at which they are digested to form glucose. High glycemic index foods — including simple or refined carbohydrates such as sugar, bakery items, white rice, mashed potatoes, etc. — can cause a spike in blood sugar and an increase in insulin levels, leading to inflammation. 

Glycelmic index.

Complex or unrefined carbohydrates, in contrast, have a low glycemic index. This means they are digested slowly and steadily, so they don't drastically change blood glucose levels. Many studies suggest that foods with a low glycemic index — including most vegetables, greens, beans, nuts and whole grains — hinder inflammation.  The FDA recommends a max of 300 grams of carbohydrate each day, based on a 2,000 calorie diet.  Check the nutrition labels to see how many carbohydrates are in your favorite foods.

For their pilot study, German researchers recruited 15 otherwise healthy adults with gingivitis who ate a diet based mainly on carbohydrates. They divided the participants into two groups. One group of 5 (the control group) continued eating their normal high-carbohydrate diet. The other group of 10 (the experimental group) were asked to follow a daily diet that included the following:

  • Fewer than 130 grams of carbohydrates. Participants in the experimental group were instructed to restrict foods like sugar, white flour, sweetened beverages, rice, and white potatoes.
  • Omega-3 fatty acids. Group members were also asked to eat foods rich in Omega-3 fatty acids (e.g., salmon and nuts) while reducing intake of Omega-6 fatty acids and trans-fatty acids (e.g., fried food, chips, donuts, etc.).
  • Vitamin C (e.g., kiwis, citrus fruit, bell pepper).
  • Vitamin D (e.g., exposure to the sun, vitamin D supplements, vitamin D-containing food such as avocado).
  • Antioxidants (e.g., berries, green tea, coffee).
  • Fiber (e.g., vegetables, fruits, beans).

Every week, dentists evaluated all study participants for plaque, gum bleeding, probing depths (measurements done with a hand-held instrument to check the attachment of the gum to the tooth), and bleeding upon probing.

The group that changed to a low-carbohydrate, anti-inflammatory diet showed a significant improvement in oral health after the four-week study period. In fact, even though the level of plaque stayed constant in both groups, inflammation in the experimental (low-carb) group was cut in half after four weeks! In the control group, however, gum inflammation actually increased.

Their results show that diet has a profound effect on gum disease. Eating too many refined carbohydrates can encourage inflammation of the gums and periodontal tissue, so for a healthy smile eat a diet low in refined carbohydrates and rich in Omega-3s, vitamins C and D, antioxidants and fiber. And keep going in for your regular dental checkups so that if there is a problem, you can take care of it as early as possible.





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