Your tongue tells all: study reveals 94% accurate health diagnosis

For this study, 50 patients, with conditions such as diabetes and anemia, were asked to provide pictures of their tongues.

The images captured were then fed into a computer programmed to detect diseases. This was based on previous studies that researched how different health conditions affect the color, shape and texture of the tongue.

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Conventional medicine has long endorsed this method. It has been proven that the color, shape, and thickness of the tongue can expose symptoms of many health issues such as diabetes, liver problems, disorders of the circulatory and digestive systems, blood diseases, and heart conditions - explains the study's author, Professor Ali Al-Naji from the University of South Australia.

Though most alterations in the shape, color, and texture of the tongue are harmless, they indeed warrant a medical assessment.

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1. A yellow tongue could indicate diabetes. People with this condition have an elevated level of sugar in their saliva, leading to an increase in bacteria on the tongue. In some rare cases, a yellow tongue could also be a symptom of liver or gallbladder problems.
2. A purple tongue, according to the Oral Cancer Foundation, could indicate some cancers, including tongue cancer. This condition results in a dark red or purple discoloration of the entire mouth's surface. A cancer-affected tongue can also be painful or burning.
3. A dark red tongue can be a symptom of a severe COVID-19 infection.
4. A warped tongue - Taiwanese scientists have shown that a slightly red and warped tongue can be indicative of a stroke. However, not everyone with a twisted tongue has had a stroke (and vice versa).
5. A swollen tongue. If the tongue is swollen, shiny, and very red, it might indicate tongue inflammation. This can be caused by an allergic reaction, injury or anemia.
6. A tongue with white patches or scales on the sides may point to hairy leukoplakia - a disease of the mucous membranes most commonly found in individuals with a compromised immune system.

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A healthy tongue is typically bright red in color, has a smooth surface, is slightly moist, and has good elasticity. Changes in these characteristics can indicate various health conditions or changes in the general health of our body.

If there are any changes on its surface, they should be monitored and, in case of any alarm, evaluated by a dentist.