Francesca Ciletti

We have never had guidelines on the treatment of obesity before, and it's the first guideline on GLP-1 therapies.

Worldwide, obesity affects over 1 billion people, and that's projected to rise to 2 billion by 2030.

Francesca Ciletti is with WHO and co-authored the guidelines.

The guidelines say it's critical that GLP-1s are part of a broader medical plan, including physical activity and management of chronic diseases linked to obesity.

They also call for equitable access to GLP-1s that prioritizes those with the highest need, as well as more research on long-term use and safety.

Gabriela Emanuel, NPR News.