The advent of fire marks a significant point in human evolution, though scholars continue to debate its primary function. While cooking is frequently regarded as a key factor, researchers from Tel Aviv University propose that the protection of meat and fat from predators is more plausible. Homo Erectus lived during the Lower Paleolithic era, approximately 1.9 to 0.78 million years ago.

“The origins of fire usage is a ‘burning’ question among prehistoric researchers globally,” stated Professor Barkay, a co-author of the study.

“By around 400,000 years ago, it was widely accepted that fire was commonly used in domestic settings. I concur with the idea of meat roasting, as well as its use for lighting and heating.”

“However, there remains a debate concerning the past million years, with various theories put forth to explain early human interactions with fire.”

“This study aimed to approach this issue from a new angle.”

“For early humans, the use of fire wasn’t a given; most archaeological sites dated around 400,000 years ago show no signs of fire usage,” explained Dr. Miki Ben-Dor, lead author of the study from Tel Aviv University.

“However, in many early locations, there are clear indications of fire usage, even if there’s no evidence of burnt bones or roasted meat.”

“We see early humans—nearly Homo Erectus—utilizing fire sporadically for specific purposes rather than regularly.”

“Collecting fuel, igniting a fire, and maintaining it involved substantial effort, requiring a compelling energy-efficient reason.”

“We propose a new hypothesis for that motivation.”

In their research, the authors reviewed existing literature on all identified prehistoric sites between 1.8 million and 800,000 years ago where fire evidence has been found.

They identified nine sites globally, including Gesher Benot Ya’aqov and Evron Quarry in Israel, six sites in Africa, and one site in Spain.

The study also drew from ethnographic research on contemporary hunter-gatherer societies, relating their behaviors to ancient conditions.

“We examined the common features of these nine ancient sites and found they all contained a significant number of bones from large animals, mainly elephants, hippos, and rhinoceroses,” Dr. Ben-Dor noted.

“Previous research has shown these large animals were critical to early human diets, providing a substantial portion of their caloric needs.”

“For instance, the meat and fat from a single elephant can supply millions of calories, enough to sustain a group of 20 to 30 people for over a month.”

“Thus, hunting elephants and hippos was highly valuable—essentially a ‘bank’ of meat and fat that required protection and preservation, as it was sought after by predators and susceptible to decay.”

Through their analysis of findings and assessments of energetic benefits of preserving meat and fat, the researchers arrived at new conclusions that challenge previous theories. Early fires served dual purposes: first, to safeguard valuable resources from predators, and second, to facilitate smoking and prevent spoilage.

“This study introduces a novel perspective on the motivations behind early human fire use: the necessity to protect large game from other predators and the long-term preservation of substantial meat supplies,” Professor Barkay explained.

“Cooking may have occurred occasionally after fire was established for these protective purposes.”

“Such usage could elucidate evidence of fish roasting around 800,000 years ago found at Gesher Benot Ya’aqov.”

“Our approach aligns with evolving global theories that characterize major prehistoric trends as adaptations to hunting and consuming large animals, followed by a gradual shift to smaller prey exploitation.”

Survey results were published in the journal Nutrition Frontier.

____

Miki Ben-Dor & Ran Barkai. 2025. The bioenergy approach supports the conservation and protection of prey, rather than cooking, as a primary driver for early use of fire. Front. Nutr. 12; doi:10.3389/fnut.2025.1585182