Neanderthals’ Ancient Medicine Cabinet: Birch Tar as Antibiotic and More

For over 150,000 years, humans have harnessed the power of birch bark and recent research suggests our Neanderthal ancestors were no different. A novel study reveals that birch tar, a viscous substance derived from birch bark, possessed antibiotic properties that Neanderthals likely used to treat wounds and potentially even ward off insects. This discovery adds to a growing body of evidence demonstrating the sophisticated healthcare practices of early human communities.

Birch Tar: More Than Just Glue

Archaeological evidence has long shown that Neanderthals utilized birch tar as an adhesive, particularly for toolmaking – attaching sharpened stone heads to wooden spears, for example. However, researchers have increasingly questioned whether this versatile substance served additional purposes. The new study, led by Tjaark Siemssen at the University of Oxford, provides compelling evidence for its medicinal applications.

Replicating Ancient Techniques

Siemssen and his team meticulously recreated the methods Neanderthals would have used to produce birch tar. They collected bark from downy birch (Betula pubescens) and silver birch (Betula pendula) – species known to have been present in Europe during the Pleistocene epoch. They employed two primary techniques: distillation in claystone pits and condensation on stone surfaces. As Siemssen notes, the process itself was a “sensory experience,” with the challenge of removing the sticky tar from hands after hours by the fire.

Antibacterial Power Demonstrated

The resulting birch tar samples were then tested against cultures of Staphylococcus aureus, a bacterium commonly responsible for wound infections. The results were significant: the birch tar effectively inhibited the growth of the bacteria, demonstrating its antibacterial properties. This finding supports the traditional use of birch tar in some Indigenous communities, such as the Mi’kmaq of eastern Canada, who call it maskwio’mi and use it as a broad-spectrum antibiotic.

Beyond Antibiotics: Insect Repellent Potential

The study also suggests that birch tar may have served as an insect repellent. While further research is needed, this adds another layer to the understanding of how Neanderthals mitigated health risks during the harsh conditions of the last Ice Ages.

Implications for Understanding Neanderthal Culture

This research has important implications for understanding Neanderthal healthcare and culture. It reinforces the idea that Neanderthals possessed a sophisticated understanding of their environment and utilized natural resources for medicinal purposes. As Siemssen explains, the findings contribute to a growing body of evidence suggesting healthcare existed in these early human communities. Further investigation into the medicinal properties of other plants available to Neanderthals is crucial for a more comprehensive understanding of their culture.