Reconstructing Neanderthal diet: The case for carbohydrates.

Area of Science:

• Paleoanthropology
• Nutritional Science
• Archaeology

Background:

• Archaeological evidence from Paleolithic sites suggests Neanderthals consumed a high-protein, low-carbohydrate diet, based on preserved animal bones and biomolecular analyses.
• However, physiological requirements for populations, especially those with large brains and active lifestyles, necessitate carbohydrates for optimal health, reproduction, and physical performance.
• This creates an anomaly between the archaeological record and established nutritional science for Paleolithic hominins.

Purpose of the Study:

• To investigate the essential role of carbohydrates in human reproduction, brain function, and physical performance.
• To evaluate resource availability and archaeological evidence concerning Neanderthal diets.
• To propose explanations for the discrepancy between Neanderthal dietary evidence and physiological carbohydrate needs.

Main Methods:

• Reviewing the physiological importance of carbohydrates for human reproduction, brain function, and physical activity.
• Analyzing archaeological data, including faunal remains and site evidence, to reconstruct Neanderthal diets.
• Examining resource availability during the Paleolithic era.
• Investigating potential genetic adaptations, sub-optimal survival, and methodological limitations in dietary reconstruction.

Main Results:

• Carbohydrates are crucial for energy, brain function, and successful reproduction, consistent with Neanderthal physiological needs.
• Archaeological evidence predominantly points to animal product consumption, with limited plant material survival.
• Three hypotheses are proposed: genetic adaptation, survival on a suboptimal diet, or limitations in current dietary reconstruction methods.

Conclusions:

• The anomaly between Neanderthal dietary evidence and physiological requirements highlights a gap in our understanding of Paleolithic subsistence.
• Neanderthals likely required a more balanced diet including carbohydrates for thriving populations.
• Future analyses of Paleolithic diets should incorporate minimum nutritional recommendations across the life course to better interpret behavioral and environmental contexts.