Researchers have found that a strain of bacteria commonly found in milk may be a trigger for developing rheumatoid arthritis in people who are genetically at risk. Rheumatoid arthritis is an autoimmune and inflammatory disease that causes the immune system to attack a person's joints muscles bones and organs. Patients suffer from pain and deformities mostly in the hands and feet. It can occur at any age but the most common onset is between 40 and 60 years old and is three times more prevalent in women. The study published in the journal Frontiers in Cellular and Infection Microbiology showed