Recent Study Reveals Neanderthals Were Processing Bones for Fat 125,000 Years Ago — And This Is What That Reveals

Neanderthals were believed to have existed between 400,000 years and 40,000 years ago. Which means they have walked on this planet longer than modern humans, but scientists didn’t really think they were capable of advanced resource intensification until a ‘fat factory’ was discovered in Germany.

In other words, researchers discovered that neanderthals were processing the bones of animals they had hunted or scavenged, to extract the calorie‑rich fat as far back as 125,000 years ago. So, what does this mean, and how has it changed our understanding of modern humans’ closest extinct relatives?

How the Neanderthal “Fat Factory” Operated

Excavations at the Neumark‑Nord site in Germany have revealed compelling evidence that suggests Neanderthals were processing animal bones for fat nearly 125,000 years ago. The researchers at the site think that they crush the bones of over 172 large animals, including horses and deer, into small fragments and then boil them to render grease and marrow.

Their ‘fat factory’ involves several stages after hunting or scavenging. First, the mechanical process where they fragmented the bones into as little as 2 cm in size, and then it will be exposed to heated water to let the grease float. The level of processes highlights their intelligence and just how close they are to the modern human species.

These findings tell us that Neanderthals are not just hunters and scavengers; they have a concept of nutrition and could intentionally plan and maximize their resources. This diet strategy allows them to circumvent the consequences of high protein diets in a cold environment by having a more balanced nutrition.

Read more: Science.org

Why Extracting Fat Was Critical

MAJOR Discovery | Neanderthal Fat Factory!

Some people might think that more protein is healthy; however, just like most things in life, too much of one thing could be dangerous. This is the same case for Neanderthals, who lived in cold, low-carbohydrate environments. Their diet was dominated by lean meat, from hunted animals or scavenged remains.

However, without sufficient fats, the proteins they consume could lead to protein poisoning, which is very lethal as it could elevate lipids and cause heart disease. The bone grease from their fat factory provides dense energy that, together with their lean meat, creates a much balanced, healthier meal.

Evidence of Advanced Behavior and Coordination

During cold climates and environments, the carbohydrate-rich resources could be scarce. So the idea that Neanderthals were able to discover that they could extract fat from animal bones could act as evidence of their advanced behavior and coordination as a species.

In other words, the existence of fat factories or food processing sites in Germany indicates that Neanderthals hunted and scavenged together, coordinated transportation, and had communal labor to extract the grease or fats.

This is a behavior that parallels modern human beings’ societal functions. Some of these features were thought to only be reserved for modern humans, but these new findings prove that Neanderthals are not as primitive as stereotypical portrayals show them to be.

Read more: Nature.com

Questions, Critiques & Further Research

Although a fat factory is a widely accepted theory, after these findings reveal the fragmentation and processing of animal bones, some scholars call for a more refined analysis of bone chemistry and residues. Because the small fragments could also be explained by butchering activities.

Still, the general consensus is that Neanderthals are smarter and more communal than we first thought. They are adept at managing their resources, specifically during scarcity and cold environments. This is a discovery that challenges outdated stereotypical beliefs about our extinct evolutionary cousins, but it also invites further studies to understand.

Neanderthal Fat Factory: What Can We Learn?

Author's Final Thoughts

According to the analysis of the food processing fat factory found in Germany, Neanderthals were not simply hunters and scavengers; they could have learn how to manage their food and resources after more than 350,000 years of existence. This behavior could indicate that they are strategic planners, have great adaptability, and are a sophisticated hominin, far more resourceful and clever than often depicted.

Read next: Scientists Say Neanderthals Ate Rotting Meat With Maggots — And This Is Why They Could Stomach It

References & Further Reading

Kindler, L., et al. (2025). Large-scale processing of within-bone nutrients by Neanderthals, 125,000 years ago. Science Advances. https://doi.org/10.1126/sciadv.adv1257

Blasco, R., et al. (2019). Bone marrow storage and delayed consumption at Middle Pleistocene Qesem Cave, Israel (420 to 200 ka). Science Advances. https://doi.org/10.1126/sciadv.aav9822

Church, R. R., & Lyman, R. L. (2003). Small fragments make small differences in efficiency when rendering grease from fractured artiodactyl bones by boiling. Journal of Archaeological Science. https://doi.org/10.1016/S0305-4403(03)00010-4

Castel, J.-C., et al. (2017). Neandertal subsistence strategies during the Quina Mousterian at Roc de Marsal (France). Quaternary International. https://doi.org/10.1016/j.quaint.2015.12.033