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Betel nuts are a top mind-affecting substance. Now there's evidence of ancient use

2 verified updates • corroborated by 1 independent source • tracked since September 19, 2026

• 🔵
  07:01 AM 1 source: NPR

  Ancient teeth pose a mystery: What made those strange grooves?
• 🟡
  10:01 AM 1 source: NPR

  Betel nuts are a top mind-affecting substance. Now there's evidence of ancient use