A tongue like fat

While years ago it was argued that present in the tongue papillae allowed only distinguish four different flavors (sweet, salty, sour, bitter) and there was evidence that the language could also identify the flavor "Unami" similar to the protein, and fat, although many
scientists thought that the latter feeling was associated more with texture than taste.

According to recent studies, the taste receptors present on the tongue can taste the fat, which would influence a preference for foods rich in this nutrient.
French researchers reported that rodents have a receiver on your tongue can feel the taste of fat, which could increase its need in food.

Apparently, humans would be the same. That is, in addition to fat texture, people might have receptors on their tongues that increase their preference for fatty foods, which was confirmed by identifying a protein called CD36 that facilitates the uptake of fatty acids.

This receptor is located on the cell surface and distributed in many tissues including fat cells, gastrointestinal tract, heart tissue, muscle-skeletal tissue and, of course, the tongue.
From this finding, the experts concluded that in the future through genetic engineering will be possible to change the amount of CD36 protein receptors to regulate the need for fat.
Meanwhile, they are involved voluntarily control their consumption, due to the many problems caused by excess consumption in the human body.