Fusobacteria are a group of bacteria that are primarily found in the human mouth and intestines. They are anaerobic, meaning they thrive in environments without oxygen. These bacteria play a role in the human microbiome, contributing to digestion and maintaining a balanced ecosystem of microorganisms. Some species of Fusobacteria are associated with various health conditions, including periodontal disease and certain types of cancer. Research is ongoing to understand their role in these diseases and how they interact with other bacteria in the body. Understanding Fusobacteria can help improve health outcomes and inform treatment strategies.