The gustatory system is a part of the mammalian body that is responsible for food intake and is regulated by the central nervous system. This area is located on the opposite side of the body relative to the olfactory organ. It plays an important role in determining the quality of food and even people, who can then become enemies and predators for us. This research organ is not only used to recognize taste, but also to determine the nutritional value of a product or person. This theory is called food as a weapon and is explained by the fact that our brain responds faster to bitter and spicy tastes than to sweet and sour ones. The most common human taste is bitter, as it stimulates the nervous system and helps protect against disease. Accordingly, food with a neutral taste is unlikely to protect you from infections, etc.
Wolves or predators can pick up a sweet smell from the blood and saliva of the prey. Therefore, a person who smelled this smell may rush to attack, although the victim was not even wounded and had no opportunity to escape. From the perspective of evolutionary origins theory, the biological need to sense the meaning of food is associated with vulnerability to predators and infection, since the survival of our ancestors depended on speed of reactions and a clear identification of danger. Today, everyone can use this knowledge to make more conscious food choices, adjusting the ratio of carbohydrates to proteins, fats and sugars. Even the known studies on sweetness and safety are mute. For example, sugary drinks and fruits make you feel full in smaller amounts per serving. But that's not all. Another interesting feature is related to the sense of taste, which consists in the ability to identify non-food odors using the taste process. Remember that time when you noticed an unpleasant odor, like sweat, even when you couldn't smell it? It is thanks to the sense of taste that we are able to identify a non-nutritive substance that we might otherwise mistake for sweet, but end up eating a spoiled product.