Apparently gum disease, bacteria can enter the bloodstream and or create 'citrullinated proteins', that go to joints and initiate an auto immune reaction. The body immune system sees these protein things, and attacks the joint tissue.
I was wondering if PMR may also be an infection related causation!
naturalnews.com/2019-03-21-...
Researchers from Johns Hopkins University have found a type of infectious bacteria that is taking over depleted microbiomes, which could trigger both severe gum disease and rheumatoid arthritis. They report that the bacteria Aggregatibacter actinomycetemcomitans are found in roughly 33 percent of people and are predominant in patients with periodontal disease and/or rheumatoid arthritis.
The team found evidence that 47 percent of patients experiencing rheumatoid arthritis also were infected with the same bacterium that is causing their periodontal disease. At first, the researchers recognized a pattern of damage taking place in the gums of patients with periodontal disease similar to what’s seen in the joints of rheumatoid arthritis patients. In periodontal disease, the bacteria spurs the production of citrullinated proteins, which initiate an antibody response.