What happened
- An international team led by Gino Caspari of the Institute of Archaeological Sciences at the University of Bern and the Max Planck Institute of Geoanthropology investigated an elaborate tomb in the Republic of Tyva in southern Siberia.
- The site belonged to prominent Scythians, a culture of horseback riders on the Eurasian steppe.
- Researchers recovered about 1,000 cannabis seeds and radiocarbon-dated six.
- With other dating evidence, they place the deposit about 2,800 years ago.
- They also found chemical traces in preserved human hair.
- ScienceDaily circulated the work on 8 November 2026 and presents it as the oldest directly dated archaeological evidence of cannabis use for its intoxicating effects.
Why it matters
The plant was used early for fiber and oil, so it is hard to tell whether an old find reflects practical, medicinal or recreational use. Flowers and resins decay, leaving little trace. Directly dated seeds plus traces in hair bring the question closer to an answer. Hair keeps compounds from what a person consumed or breathed, giving an individual clue seeds alone do not.
The number
About 2,800 years. The estimated age of the seed deposit, of which six seeds were radiocarbon-dated.
Context
The Scythians left rich tombs on the steppe. A closed-context find with a direct date is harder to challenge than an undated one. The text read does not detail the chemical technique on hair or how many people were analyzed, and it describes an elite tomb, not a general practice. Related coverage: Ancient genomes point to central Europe as the origin of the Celtic spread, Mesoamerican maize holds little structure tied to the languages that grow it, A skull kept for over a century reveals Europe’s first megaraptoran dinosaur, Schooling evolved more than 300 times in fishes and is linked to greater diversification.
Radiocarbon dating measures the decay of carbon-14 in organic material and works on seeds because they hold carbon from the plant that made them. Dating six seeds separately, rather than one, guards against later intrusion contaminating a sample. Traces in hair give a chemical clue about a person’s contact with the plant, although the text read does not say how many individuals were analyzed.
What’s next
- The team can extend chemical analysis to other Scythian tombs in the region.
- Comparison with other Eurasian sites is needed to know whether use was local or widespread.
- The full publication will show the dating and hair-analysis methods.
Bottom line
A dated seed is worth more than many late descriptions. With it, the idea of ritual cannabis use almost three millennia ago moves from story to data.
Sources
- ScienceDaily, “Ancient Siberian tomb reveals surprising secrets of cannabis use 2,800 years ago”, 8 November 2026, on a study led by Gino Caspari. The original scientific paper was not read.
- Cover image: Joanbanjo, CC BY-SA 3.0, via Wikimedia Commons
Edited by Rodrigo Cornejo. How we select and verify: who writes these notes.
