"Because most people with obesity have elevated insulin levels, they develop insulin resistance, which contributes to weight gain. Semaglutide (or Ozempic) helps lower the levels of this fat-storing hormone, making it easier for the body to burn fat and lose weight," said Dr. Owens.

GLP-1 receptor agonists, which can cost around $1,300 a month, have caused an increase in premiums that “affect all members, whether they utilize weight loss drugs or not,” IBX said in a statement.