Fusobacterium is a genus of anaerobic, gram-negative bacteria naturally found in the human oral cavity, gastrointestinal tract, and sometimes in the vaginal flora. While some species may exist as part of a normal microbiome, Fusobacterium is also known for its association with inflammation and infection. High levels in the gut have been linked to conditions such as inflammatory bowel disease (IBD) and colorectal cancer. Its presence is often considered a marker of microbial imbalance or pathogenic overgrowth, especially when found alongside symptoms like bloating or altered bowel habits.
It is a group of anaerobic bacteria that can live in the gut, mouth, and other mucous membranes.
Because high levels may be linked to inflammation, gut imbalance, or even more serious conditions such as IBD or colorectal cancer.
Not necessarily. It can be part of the normal microbiota, but overgrowth or the presence of certain species might suggest a problem.
Possible factors include poor oral hygiene, low microbial diversity, chronic inflammation, or certain dietary habits.