What increases the risk of rheumatoid arthritis?

What increases the risk of rheumatoid arthritis? Under the protection of the question, which increases the risk of rheumatoid arthritis? The answer is the only risk factor known to rheumatoid arthritis is a genetic factor in some families (genetic readiness). The genetic factor can affect how the immune system works, which causes inflammation and eventually destroys the membranes that lay the joints. Among other factors that may affect the risk of rheumatoid arthritis include: female gender. Arthritis affects women 2-3 times more than men. Age between 40 and 60. Rheumatic arthritis can start at any age, but it usually starts puberty.