Mayo Clinic Minute What’s rheumatoid arthritis?

More than 54 million Americans suffer from painful, swollen joints caused by arthritis, according to the Centers for Disease Control and Prevention (CDC). A new report from the CDC highlights for the first time the prevalence and health-related characteristics of arthritis across the U.S. Dr. Eric Matteson, a rheumatologist at Mayo Clinic, says one form of the chronic condition, rheumatoid arthritis, can affect more than joints. It can affect a person's heart, eyes, lungs and kidneys.