Ancient teeth pose a mystery: What made those strange grooves?

Scientists have discovered unusual grooves on ancient human teeth, hinting at the regular consumption of betel nuts, a plant known for its mind-altering effects common in parts of Asia. This finding challenges previous assumptions about ancient diets and highlights the long-standing cultural practices surrounding psychoactive substances. The implications extend beyond diet, suggesting a deeper understanding of ancient human behaviors and the societal norms that shaped them. This research could reshape our view of ancient civilizations and their use of natural substances.