Scientists have unearthed evidence of a milestone in human culture — the earliest known use of tobacco — in the remnants of a hearth built by early inhabitants of North America’s interior about 12,300 years ago in Utah’s Great Salt Lake Desert.
Researchers discovered four charred seeds of a wild tobacco plant within the hearth contents, along with stone tools and duck bones left over from meals. Until now, the earliest documented use of tobacco came in the form of nicotine residue found inside a smoking pipe from Alabama dating to 3,300 years ago.
The researchers believe the nomadic hunter-gatherers at the Utah site might have smoked the tobacco or perhaps sucked wads of tobacco plant fiber for the stimulant qualities offered by the nicotine it contained.
After tobacco use originated among the New World’s native peoples, it spread worldwide following the arrival of Europeans more than five centuries ago. Tobacco now represents a worldwide public health crisis, with 1.3 billion tobacco users and more than 8 million annual tobacco-related deaths, according to the WHO.
“On a global scale, tobacco is the king of intoxicant plants, and now we can directly trace its cultural roots to the Ice Age,” said archeologist Daron Duke, principal and chief operating officer at the Far Western Anthropological Research Group in Nevada and lead author of the research published in the journal Nature Human Behaviour on Monday.
The seeds belonged to a wild variety of desert tobacco, named Nicotiana attenuata, that still grows in the area.
“This species was never domesticated, but is used by indigenous people in the region to this day,” Duke said.
Today, the Great Salt Lake Desert is a large dry lake bed in northern Utah. The hearth site at the time was part of a vast marshlands, with a chillier clime during the twilight of the Ice Age. It is called the Wishbone site owing to duck wishbones found in the hearth.
The hearth remnants were found in the barren mud flats where wind has been peeling away sediment layers since the marshlands dried up about 9,500 years ago.
“We know very little about their culture,” Duke said of the hunter-gatherers. “The thing that intrigues me the most about this find is the social window it gives to a simple activity in an undocumented past. My imagination runs wild.”
Artifacts there included small sharp stone cutting tools and spear tips made of a volcanic glass called obsidian, used for hunting large mammals. One spear tip bore the remains of blood proteins from a mammoth or mastodon.
“We surmise that tobacco must have figured into the ecological knowledge base of those who settled the interior of the North American continent, some 13,000-plus years ago,” Duke said.
Tobacco domestication occurred thousands of years later elsewhere on the continent, in the Southwestern and Southeastern US and in Mexico, Duke added.
“We don’t know when exactly tobacco was domesticated, but there was a great florescence of agriculture in the Americas within the last 5,000 years. Evidence for the use of tobacco, both direct — seeds, residue — and indirect — such as pipes — increases during these times alongside the domestication of food crops,” Duke added.
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