인간은 25,000년 전부터 약물을 사용했다

Did you know humans have been using drugs for over 25,000 years? Scientists in Indonesia found something surprising. Old teeth and bones show that ancient people chewed betel nuts long ago.

Betel nuts are seeds from a special tree. People crush them and chew them. The nut has a chemical that changes how your brain works. It makes you feel more awake and alert. It also makes your mouth red.

Archaeologists found these old bones in caves. The bones had stains on the teeth. These stains match the color of betel nut juice. The stains suggest people chewed these nuts regularly. The bones are very, very old — about 25,000 years old!

This discovery is important. It teaches us that drug use is ancient. Humans did not start using drugs recently. Ancient people knew about plants that change how they feel. They used these plants for many reasons. Maybe they used them to stay awake while hunting. Maybe they used them to feel better when sick. We do not know for sure yet.

This finding shows us something interesting about human nature. People have always looked for ways to change how they feel. Using these plants was part of their daily life. It was normal for them, just like drinking tea or coffee is normal for us today.

What do you think? Why do you think ancient people wanted to use betel nuts? Do you know other old plants that people still use today?

Inspired by reporting from BBC News.