Most people have never heard of it, but betel nut is one of the most widely consumed psychoactive substances on Earth. We’ve ...

Ancient rituals and customs often leave behind obvious archaeological evidence. From the impeccably preserved mummies of Egypt to psychoactive substance residue that remained at the bottom of a clay ...

Traces of a psychoactive compound has been detected in the dental plaque of a Bronze Age woman buried in Thailand some 4,000 years ago, making it the earliest direct chemical evidence of humans ...

Scientists analyzed preserved dental plaque from a woman at a 4,000-year-old burial site and said they found evidence of betel nut use. Outside researchers say more evidence is needed to establish ...

For the first time, archaeologists have used advanced scientific techniques on 4,000-year-old dental plaque to confirm traces of betel nut chewing in ancient Thai communities. Betel nuts are usually ...