Taste buds have very sensitive microscopic hairs called microvilli (say: mye-kro-VILL-eye). Those tiny hairs send messages to the brain about how something tastes, so you know if it’s sweet, sour, bitter, or salty. The average person has about 10,000 taste buds and they’re replaced every 2 weeks or so.

Why do people perceive taste differently?

People’s tastes also are different because of the sensory capacities for the different tastes. “The sensory capacities of your taste buds are dictated by the structure of the receptors on your taste cells, and on their capacity to excite the process of transmitting the taste message,” (TasteScience).

Why do humans have a sense of taste?

The sense of taste is stimulated when nutrients or other chemical compounds activate specialized receptor cells within the oral cavity. Taste helps us decide what to eat and influences how efficiently we digest these foods. … The learned consequences of ingested foods may subsequently guide our future food choices.