The nation's obesity epidemic is growing. Nearly 42 percent of all American adults are considered obese. Now, new findings about the FDA-approved weight-loss drug Wegovy may lead to even more demand for a medication that can be both life-changing and expensive. William Brangham reports.

Originally released by NewsHour Productions LLC, 2023. Streaming video file encoded with permission for digital streaming by Infobase on November 02, 2023.