VIDEO: Understanding risk factors for rheumatoid arthritis

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It continues to evolve. Common genetic risk factors have expanded into many, many, many more, and that continues to grow. Certainly, the risk factor of smoking, of tobacco, is well known, well established now. Bacteria. So, periodontitis, infection of the gums, has been indicated to be a potential risk factor. And I will also say that post-traumatic stress disorder and the severity of post-traumatic stress disorder has also been identified as a potential independent risk factor for incident rheumatoid arthritis. There have been studies to show this as well. So, I think we continue to still not completely understand why someone gets rheumatoid arthritis, but we are identifying things more and more as the science evolves.