May is arthritis awareness month. While many people think arthritis comes with old age, there are actually a variety of causes. Liz Vermeer, a physical therapist at Pella Regional Health Center, says obesity is one of the leading causes of arthritis. Another cause can be previous injuries to a joint. She says staying active both the best prevention and treatment for arthritis, but reminds families that keeping active is easier when you aren’t doing it alone. She encourages families to participate in activities and exercise together.