The World Ahead Globe Icon
The World Ahead | Science in 2024

Expect a bumper year for weight-loss drugs

The market for drugs such as Wegovy and Mounjaro could be worth $77bn by 2030

medicine from a pill breaking down fat cells
Illustration: Shira Inbar

By Natasha Loder

FOR decades, weight-loss drugs have been a disappointment, delivering ineffective or even dangerous treatments. The recent arrival of drugs that are both effective and safe is therefore a medical milestone. Some now talk of a long-term future in which obesity might be cured. That is no small claim: obesity is a serious global problem, with 1.1bn people, or roughly 14% of the world’s population, being obese.

Explore more

This article appeared in the Science and technology section of the print edition of The World Ahead 2024 under the headline “Curing obesity”

Discover more

The World Ahead The World Ahead 2025

Ten business trends for 2025, and forecasts for 15 industries

A global round-up from The Economist Intelligence Unit

Illustration of power boats in the 2025 World Games in Chengdu, China

The World Ahead The year ahead

Calendar 2025

Our selection of events taking place around the world


The World Ahead Superforecasters in 2025

What the “superforecasters” predict for major events in 2025

The experts at Good Judgment weigh in on the coming year


The World Ahead Obituary in 2025

The rings of Saturn will disappear in 2025

First observed by Galileo, this occurs twice every 29 years

The World Ahead By Invitation: Science & technology in 2025

Casey Handmer says solar power is changing the economics of energy

Large-scale production of synthetic fuel is now feasible, argues the founder of Terraform Industries

The World Ahead Science & technology in 2025

Space missions to watch in 2025

Humans may fly around the Moon, and robots will explore new frontiers