Buzz
Sweet or salty? Explore more candy images.
Kathrin Ziegler/Taxi/Getty ImagesSugar and salt have gained a bad reputation these days due to overconsumption. However, before the era of high fructose corn syrup and deep-fried onion rings, a preference for sweet and salty foods indicated that something was safe and nourishing—essentially, a survival instinct embedded in our genetics.
Why do some people favor one taste over the other? The answer lies in heredity. Aside from identical twins, each person inherits a distinct genetic combination that influences their taste sensitivity. Additionally, genetics determine the number of taste buds you have, while your environment also plays a role.
To begin with, let's explore how nature fosters a craving for sweetness.
Sweet Indulgence
Some individuals are simply born with a fondness for sweets.
Bambu Production/The Image Bank/Getty ImagesSweet cravings are innate: This desire for sugary foods leads infants to vital, high-energy nourishment. The ability to perceive sweetness is directly linked to a specific DNA segment in taste receptor cells, which are present not only in the tongue but also in the intestines. For instance, mice with genetically altered "human" taste buds displayed a distinct preference for sweets, similar to humans.
People who have a high sugar tolerance may actually have a reduced sensitivity to sweetness. These "nontasters" often possess only about one-third as many taste buds as "supertasters," meaning they require more sugar in food to feel the same level of satisfaction.
Salty Characters
A strong craving for salt might indicate a sodium deficiency.
David Roth/Digital Vision/Getty ImagesEven ants seem to understand that salt is vital for life. In a study, ants in environments where salt was scarce chose it over sugar when both were available.
Salt is known to enhance other flavors and mask bitterness. Supertasters, who are more sensitive to all tastes, including unpleasant ones, may find themselves craving salt.
Salt enthusiasts, you might be compensating for past sodium shortages. Research indicates that premature infants with low sodium at birth often grow up to have a preference for salt.
Environmental Awareness
Your childhood eating habits likely played a role in shaping your current preferences.
Bambu Productions/Taxi/Getty ImagesEver heard the saying, "You are what you eat"? Well, you might also be what your mother ate. A mother’s diet during pregnancy or breastfeeding can influence an infant’s preference for sweet or salty flavors.
As you grow, exposure to different foods can change your tastes. We tend to favor flavors linked to positive experiences. For example, cravings for comfort food often stem from emotional needs rather than physical ones. Take chocolate: it contains tryptophan, an amino acid essential for producing serotonin, the chemical that lifts our mood. But soybeans have even more tryptophan—yet when was the last time you craved tofu?
