Lesa Walton suffered for years with rheumatoid arthritis. “It was awful,” said Ms. Walton, 57, who lives in Wenatchee, Wash. “I kept getting sicker and sicker.” She also had high blood pressure, and she was obese. Doctors told her to diet and exercise, which she did, to no avail. Then she found a doctor who prescribed Wegovy, one of the new obesity drugs. Not only did she lose more than 50 pounds,