31-Jul-2025
4,000-year-old teeth record the earliest traces of people chewing #psychoactive #betelNuts
New methods make the ‘invisible visible’ to find evidence of deeply rooted cultural practice which otherwise might have been lost in the #archaeological record
Humans have used psychoactive plants for their narcotic effects for thousands of years. Throughout Thailand, remains of betel nuts, plants used for their stimulant effects, have been discovered at burial sites. To learn more about the practice, an international team of researchers have examined 4,000-year-old teeth and found traces of compounds from betel nuts. This indicates that betel nut chewing has been practiced for thousands of years, if not more, in the country. The study is the first to detect ‘archaeologically invisible’ cues in dental plaque, revealing ancient behaviors and practices that otherwise could have been lost to time.