Human Aversion to Insects in the Diet May Be 9,000 Years Old, Study Shows

An innovative study that examined ancient teeth and human DNA is uncovering a surprising and complex story about humanity’s consumption of insects. The findings suggest that the modern aversion to eating insects—a common trait in many cultures—may have an ancestral origin dating back roughly 9,000 years.

The research reveals distinct dietary patterns among different ancient human groups. Modern humans who lived in northern Eurasia consumed insects only occasionally. This dietary practice contrasts sharply with that of Neanderthals, who, according to the study, may have incorporated insects into their diet much more regularly. The difference points to important variations in subsistence strategies and food‑resource availability between these ancestral populations.

Beyond the archaeological and genetic evidence indicating these consumption patterns, the study also highlights a fascinating biological adaptation. Populations that lived in regions near the tropics, for example, retained genes that facilitate the digestion of insect exoskeletons in their genetic heritage. The persistence of these genes in those specific geographic areas suggests a long‑standing and continuous relationship with insect consumption as an integral part of the diet, indicating an evolutionary adaptation to exploit this food source.

The meticulous analysis of ancient teeth and human DNA therefore not only illuminates little‑known aspects of human dietary history but also offers a fresh perspective on the diversity of our ancestors’ diets. It shows how food intake varied not only between distinct human species such as Neanderthals and modern humans but also geographically, with genetic adaptations reflecting the availability and importance of certain food sources in different environments. This revelation contributes to a more complete understanding of the evolution of the human diet and the interplay of culture, biology, and environment over millennia.

With information from ScienceDaily.