World's oldest piece of chewing gum is 5,000 years old
A 5,000-year-old piece of chewing gum, which was discovered by an archaeology student in Finland in 2007, is known as the oldest piece of chewing gum yet found. It is believed that people from the Neolithic Era used chewing gum to treat gum infections. Prominent tooth imprints were also found on the piece of gum.