We all have one, but how much do you really know about your tongue? You might be surprised to learn your tongue can tell you some interesting things about your health.

A fat tongue could be a warning sign for sleep apnea.
A recent study from University of Pennsylvania researchers found that the tongues of obese people with obstructive sleep apnea (OSA) were larger with more fat. “Previous studies showed that the human tongue has a high percentage of fat, and that tongue fat and tongue weight were positively correlated with the degree of obesity,” the study’s senior author Richard J. Schwab, M.D., said in a statement. “This is the first study that examined OSA patients and found higher fat deposits in obstructive sleep apnea patients than in those without OSA.”

Tongue color can give your doctor hints about your health.
A healthy tongue is a nice pink shade — except for right after it has devoured blue ice cream or purple candy. Some allergies and infections might cause some redness and swelling of the tongue called glossitis. A bright red color accompanied by fever and sore throat may be more serious. Yellow Tongue = Stomach Problem or Fever.

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White patches on the tongue and inside the mouth can be a sign of thrush, a fungal infection usually treated with…

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