4. Infections – The Role of Bacteria and Viruses in RA
Infections are another factor that can contribute to the development of rheumatoid arthritis. Some researchers believe that certain bacteria or viruses may act as triggers for the autoimmune response seen in RA patients. For example, the bacteria Porphyromonas gingivalis, which is responsible for periodontal disease, has been linked to an increased risk of RA.
This connection is thought to be due to a process called molecular mimicry. In some cases, the proteins produced by bacteria or viruses may resemble proteins found in the human body. When the immune system attacks these foreign proteins, it may inadvertently attack the body’s own proteins as well, leading to the autoimmune response seen in RA.
Additionally, infections can cause inflammation in the body, which may exacerbate RA symptoms or contribute to the disease’s development in susceptible individuals. It is important to maintain good oral hygiene and promptly treat any infections to help reduce the risk of developing RA. (4)
