The tongue map is a lie

Almost all of us learned in school that the tongue has zones: the tip for sweet, the sides for salty and sour, the back for bitter. That famous map is a mistake.

In reality, every region of the tongue that has taste buds can detect all five basic tastes. The myth was born from a misreading of a 1901 German study: someone translated a few small differences in sensitivity as if they were exclusive zones, and the drawing ended up in textbooks for decades.

Next time you taste something sweet, notice: you feel it all over your mouth, not just at the tip. It took science almost a century to erase that map.

Source: Nature magazine