The world’s oldest piece of chewing gum was discovered in Finland and is estimated to be over 9,000 years old. Made from birch bark tar, this ancient gum was likely chewed for its antiseptic properties and to treat gum infections, rather than for enjoyment. Birch bark tar contains compounds that have antibacterial effects, which would have been beneficial for early humans’ oral health. This discovery provides a fascinating glimpse into the everyday lives of our prehistoric ancestors and highlights the long history of chewing substances for both medicinal and recreational purposes.