'It's the Earliest Strong Evidence of People Getting High' on Pot

Signs of ritual marijuana smoking found in western China
By Newser Editors and Wire Services
Posted Jun 13, 2019 3:25 AM CDT
Signs of Pot Smoking Found in Ancient Chinese Graves
The Greek historian Herodotus wrote of people in Central Asia smoking cannabis around 440 BC.   (AP Photo/Susan Montoya Bryan, File)

Archaeologists have unearthed the earliest direct evidence of people smoking marijuana from a 2,500-year-old graveyard in western China. In a complex of lofty tombs in the Pamir Mountains—a region near the borders of modern China, Pakistan, and Tajikistan—excavators found 10 wooden bowls and several stones containing burnt residue of the cannabis plant. Scientists believe heated stones were used to burn the marijuana and people then inhaled the smoke as part of a burial ritual, the AP reports. "It's the earliest strong evidence of people getting high" on marijuana, said Mark Merlin, a botanist at the University of Hawaii. He was not involved in the research published Wednesday in the journal Science Advances.

The history of ancient drug use has long intrigued scholars. In the past century, archaeologists have found cannabis seeds and plants buried in tombs across Central Asia's highlands. But since the cannabis plant has other uses—seeds are pressed for oil and fibers used for cloth—the presence of seeds alone doesn't confirm drug use. Using new techniques for chemical analysis, the study's scientists examined the residue and found evidence of THC, the compound that gives pot its high. Most wild cannabis plants have low levels of THC, so the researchers believe the people who built the graves deliberately selected or cultivated plants with higher amounts. "During funeral rites, the smokers may have hoped to communicate with the spirit world—or with the people they were burying," says study co-author Yimin Yang.

(More cannabis stories.)

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