AdvertisementWegovy works. But here's what happens if you can't afford to keep taking the drugJanuary 30, 2023Allison AubreyfacebookEmailWegovy has been called "a major breakthrough" given how well it works to reduce body weight. But the injection drug is extremely expensive and when people can't afford to stay on it, they experience rebound weight gain that's hard to stop. (Katherine Streeter for NPR)