Oldest direct evidence of psychoactive cannabis use found in 2,800-year-old Siberian tomb

Researchers led by Gino Caspari reported in Science that a Siberian tomb called Tunnug 1, dated to around 2,800 years ago, contains the earliest direct evidence of psychoactive cannabis use. Over 1,400 seeds were found around the remains, and THC was detected in preserved hair, linking the plant to ritual use in a burial that also held human and horse sacrifices.

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