New findings from the Institute of Evolutionary Biology shed light on humanity’s complex relationship with eating insects, showing that modern humans in northern Eurasia rarely included bugs in their diet, a trait dating back millennia.
- Northern Eurasian humans show rare insect consumption over 9,000 years.
- Neanderthals consumed insects regularly, similar to some primates.
- Tropical groups carry genes that enhance ability to digest insect exoskeletons.
What happened
Researchers examined 745 dental calculus samples from ancient anatomically modern humans dating back 33,000 years, identifying insect DNA to trace dietary habits over time. Their analysis revealed that in northern Eurasia, insect consumption was occasional and largely accidental rather than a staple food source. Genetic studies supported these findings, showing a prevalence of gene mutations that reduced the ability to break down chitin found in insect shells among these populations, a pattern consistent for about 9,000 years since the agricultural era.
In contrast, evidence from Neanderthal dental tartar suggested a more frequent intake of insects, including species like flies and mosquitoes. This suggests Neanderthals may have regularly consumed animal carcasses containing insect larvae, a dietary behavior paralleling that of some modern primates. Genetic data from Neanderthals and a Denisovan specimen also indicated more efficient digestive adaptations to insect consumption.
Why it feels good
Understanding this long evolutionary history helps explain cultural attitudes toward eating insects today, especially in Western societies where entomophagy remains uncommon. The genetic evidence shows that aversion to insects in the diet is not purely cultural but also linked to ancient ecological and evolutionary forces.
Conversely, populations living closer to tropical regions tend to retain genetic variations that increase production of digestive enzymes needed to process insect exoskeletons effectively. In these areas, abundant social insects like termites and locusts offer a nutrient-rich, sustainable food source. This genetic adaptation supports ongoing reliance on insects as part of a balanced diet.
What to enjoy or watch next
As the global food supply faces increasing challenges from population growth and climate change, interest in sustainable alternatives like edible insects is rising. Exploring the ancient context of human insect consumption can inspire greater acceptance and innovative culinary approaches to entomophagy worldwide.
For those curious about sustainable eating trends, following research on insect-based nutrition and ecological impacts could prove rewarding. Documentaries and culinary shows highlighting insect dishes and their historical significance may expand perspectives on this often-misunderstood food source.