第27回 の解答

Overcoming the Yuck Factor

Nutritionists have long pointed out that edible insects are a rich source of protein, vitamins, and minerals. Because insects are cold-blooded, they do not need to use energy to maintain their body temperature, and some species, such as crickets, are thought to convert feed into body mass considerably more efficiently than cattle or pigs. Insect farming also appears to produce fewer greenhouse gases and to require far less land and water than conventional livestock farming. Insects are already a common part of the diet in many parts of Asia, Africa, and Latin America. Despite these apparent advantages, however, insect-based foods have remained a niche product in most Western countries.

Psychologists suggest that the main obstacle is not taste but disgust, an emotion that appears to be heavily shaped by culture. People who grow up in societies where insects are eaten tend to regard them as ordinary food, whereas others associate them with dirt and disease. Research indicates that such reactions can weaken with repeated exposure, particularly when insects are served in forms that hide their shape, such as flour used in pasta or baked goods. In some studies, participants who had tasted a product containing ground insects were noticeably more willing to try similar foods later.

Marketers have drawn practical lessons from these findings. Rather than promoting insects as exotic delicacies to be eaten on a dare, many companies now present them as a sensible, sustainable ingredient. Some critics, however, question whether insect farming is as environmentally friendly as advocates claim. They note that its benefits depend heavily on what the insects are fed and on how much energy is needed to keep farms warm in cooler climates. If insects are raised on crops that humans could have eaten directly, the efficiency gains may be much smaller than expected.