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Tongue color can reveal heart problems, new study finds

2025-11-25 23:54:32Lifestyle SHKRUAR NGA REDAKSIA VOX
Tongue color can reveal heart problems, new study finds
Illustrative photo

A new study from the University of Sussex Medical School suggests that the human tongue may provide early signals of heart damage.

According to scientists, patients with this disease have distinct changes in the appearance and bacteria of their tongue compared to healthy people.

In people without heart problems, the tongue is usually light pink and has a thin white coating.

But, in cases of heart problems, it appears redder and covered with a thicker layer, often yellow in color.

The more severe the heart problem, the more pronounced these changes become.

To investigate this connection, researchers analyzed 42 patients with chronic heart failure and compared them with 28 healthy people.

All participants had no dental problems, infections, or antibiotic use, to avoid external influences on oral microbes.

Tongue coating samples were taken in the morning, before brushing teeth or eating food.

Genetic analyses of the bacteria, using the 16S rRNA method, showed significant differences between the two groups. The heart failure patients had a completely different bacterial composition, with five types of bacteria that accurately distinguished them from healthy people with about 84% accuracy.

Some of the bacteria, such as eubacterium and solobacterium, declined significantly as the heart condition worsened.

These results suggest that tongue analysis could become a simple, noninvasive, and potentially useful tool for detecting or monitoring heart failure. If the method is further developed, it could serve as a rapid and affordable screening tool, even on a large scale.

While it is not yet known whether changes in tongue bacteria are a cause or effect of the disease, the researchers say that this data opens up a new avenue of research. Our bodies, it seems, show much more than we think, and the tongue may be a hidden window into heart health.


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