Humans’ preference for sugar is believed to have evolved as a survival technique, as sweetness often indicated safe and energy-providing foods. This preference for high-fat and high-sugar foods may contribute to modern obesity rates.
The evolutionary reason for humans’ consumption of sugar is thought to be a result of survival techniques of prehistoric humans who discovered that sweetness was often indicative of safe foods that provided energy, while a bitter taste more often denoted toxicity. Although living conditions and the availability of safe food have changed dramatically, many scientists believe that human physiology has remained the same in terms of taste. Humans may be attracted to sugar because in prehistoric times, a sweet taste generally meant that an item contained a higher percentage of fat, which would provide energy reserves for times when food was unavailable. The evolutionary preference for foods high in fat and sugar is thought to contribute to the increased prevalence of obesity in modern times.
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It is estimated that people consume an average of 120 million tons (108 million tons) of sugar each year.
Chimps have been found to ignore bee stings only to break into beehives to retrieve the sweet honey.
More than two-thirds of Americans are obese or overweight, and some government agencies began taking steps in the 2010s to ban or limit items that are high in sugar, such as sodas.
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