Surprise Connection Between Gum Disease and Bad Knees

Want healthy knees? Then you better floss your teeth.

Yes, you read that right. Scientists have found traces of gum bacteria in the knees of people with rheumatoid arthritis and osteoarthritis. The study, published in the Journal of Clinical Rheumatology, adds more evidence of the link between poor oral health and poor health in general.

Researchers from Case Western Reserve University in Cleveland essentially traced the passage of bacteria in the mouth to the fluid surrounded the kneecap, called synovial fluid. By analyzing the DNA of the bacteria, the researchers could determine that the progeny of the gum bacteria entered into the bloodstream and settled in the synovial fluid, which was in a weakened state as a result of arthritis.