New Insights into Neanderthal Diets
Recent studies are challenging the long-held belief that Neanderthals were solely fierce hunters who relied heavily on large game. Instead, new findings suggest a more diverse diet that includes insect larvae. This discovery is based on high levels of nitrogen in Neanderthal bones, which may indicate that they consumed not only rotting meat but also the fly larvae found within it.
Melanie Beasley, a researcher at Purdue University, explains that large quantities of larvae were readily available, easy to collect, and rich in nutrients. For years, Neanderthals were viewed as superpredators, feeding almost exclusively on large animals due to high levels of heavy nitrogen-15 in their bones. However, recent research suggests these nitrogen isotope values could be explained by a more balanced, omnivorous diet that might have included insect larvae and plant-based foods.
Beasley notes that the Neanderthal diet likely included a wide range of resources from their environment, including vegetables, though they probably relied heavily on wild meat for protein. This new theory helps to clarify the image of the gluttonous hunter and provides a better explanation for the chemical traces left behind by Neanderthals.
Understanding Dietary Patterns Through Bone Analysis
The ratios of various elements in animal bones can offer insights into their diets. High levels of heavy nitrogen in Neanderthal bones may be attributed to their consumption of maggots. John Speth, professor of anthropology at the University of Michigan, states that Neanderthals were not hypercarnivorous. It’s likely that maggots were part of their diet.
Karen Hardy, a professor of prehistoric archaeology at the University of Glasgow, adds that in many cultures, maggots are commonly consumed. They are rich in protein, fat, and amino acids. For Neanderthals, this was simply a smart and nutritious choice.
Beasley explains that storing meat attracted flies, which laid eggs, leading to the development of maggots. She adds that consuming too much protein can cause the body to struggle with breaking down and removing toxic byproducts like ammonia, which can lead to weakness, lethargy, and even death if the diet isn’t normalized. Humans have a limit of protein consumption that cannot exceed 300 grams per day for more than about two consecutive weeks.
Scientific Findings and Implications
The conclusions of this research, published in the journal Science Advances, indicate that the nitrogen isotope ratios in Neanderthal bones cannot be explained solely by meat consumption. In larvae, a greater increase in nitrogen-15 levels is observed, and the presence of carrion-feeding insect larvae disrupts the expected nitrogen-15 accumulation.
An herbivore accumulates nitrogen-15 from eating grass, so its own body has a slightly higher δ¹⁵N value, while carnivores have higher proportions due to consuming herbivores. However, the nitrogen values found in Neanderthal bones exceeded those of carnivorous animals significantly.
Fly larvae are a fat-rich, nutrient-dense, ubiquitous, and easily procured resource, and there is evidence that many past societies regularly consumed larvae and even intentionally bred them for food. Beasley explains that the maggots feed on the meat and thus become a fatty addition themselves. If you eat the meat together with the maggots, you get a much more complete source of nutrients. She added, “You absolutely need fats and carbohydrates in addition to protein.”
Neanderthals as Skilled Hunters and Gatherers
Neanderthals were skilled hunters and gatherers, regularly hunting large animals such as horses, bison, and even forest elephants weighing up to 14 tons. Beasley says that if you only hunt lean game, you only get lean meat with a lot of protein.
While there is no concrete evidence that maggots were actually eaten by Neanderthals, she suspects that they were not a problem for them; on the contrary, they could have served as a valuable source of nutrients.
Future Research and Modern Relevance
Future research could show more precisely what was eaten thousands of years ago and what effects this had on the health of Neanderthals. As the planet seeks sustainable dietary solutions, a return to a prehistoric dietary practice based on insects may not be as unlikely as it sounds, and the fact that this practice still exists today shows that maggots have been eaten throughout human history.