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Chew on This: Gum May Prevent Ear Infections

Study Shows Sweetener Xylitol May Curb Growth of Bacteria
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WebMD Health News
Reviewed by Laura J. Martin, MD

Nov. 17, 2011 -- Middle ear infections are common during early childhood, but the simple strategy of chewing gum with the sweetener xylitol just may be an effective way to help prevent them.

Based on their review of three studies of healthy children from Finland, researchers found that there is "fair evidence" to support the conclusion that kids who chew gum containing the natural sweetener xylitol may have a lower risk of ear infections.

In their analysis of the studies, which included children attending Finnish day care centers, regular consumption of xylitol in the form of gum, lozenges, or syrup was associated with a 25% reduced risk for developing middle ear infections.

The researchers conclude that stronger studies are needed to prove that xylitol prevents middle ear infections, but they add that the findings to date are promising.

"These studies were all from the same research group in Finland," researcher Amir Azarpazhooh, DDS, of the University of Toronto, tells WebMD. "While there is fair evidence to support a benefit, more research is needed to make a firm recommendation about using xylitol to prevent ear infections."

Xylitol Curbs Bacteria

Also known as birch sugar, xylitol is used in many reduced-calorie products including gums, candies, and some baked products.

Because it has been shown to curb the growth of some bacteria, some dentists recommend chewing xylitol-sweetened gum to prevent cavities.

Many middle ear infections occur when bacteria accumulate in the eustachian tubes that connect the nose and ears, so the thinking has been that xylitol may also prevent ear infections by preventing bacteria from growing there.

The review examined three studies that included 1,826 healthy children and a single study involving 1,277 children with respiratory infections who were at high risk for developing ear infections.

Use of xylitol-containing gum, lozenges, or syrup did not appear to reduce middle ear infections in the children who already had respiratory illnesses.

Findings from the studies suggested that xylitol-containing gum was superior to xylitol syrup for preventing middle ear infections in healthy children. There was no difference between xylitol-containing gum and xylitol lozenges in preventing middle ear infections.

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