Rheumatoid arthritis is a painful and disabling autoimmune disease that affects more than 1% of people worldwide. In the United States alone, it disrupts the lives of about 1.

Researchers have been able to see what happens in inflamed joints of children with arthritis, giving insight into why treatments affect children differently.

Death rates from high blood pressure, arrhythmias and heart failure have risen sharply since 1970, new research shows.