The newest weight-loss drugs, Wegovy and Zepbound, are incredibly popular. But doctors are still learning about all of the ways they affect the body—both helpful and harmful—beyond reducing weight. In report published in Nature Medicine,

About 140,400 obese patients in Massachusetts were prescribed medications like Wegovy and Zepbound in 2024, a 255 percent increase from 2023, according to a Globe analysis of insurance claims data.

The findings, based on an analysis of records from 2.5 million VA patients, support much of what scientists already suspected but contain surprises, too.