What this means is that by changing only one hormone, “suddenly you change your entire relationship with food”, says Prof Giles Yeo, an obesity scientist at the University of Cambridge. And that has all sorts of implications for the way we think about obesity.

A sign at a pharmacy in Jongno District, central Seoul, says that Wegovy, a weight-loss drug, is available for sale on Thursday.

WeightWatchers said on Tuesday it would offer a compounded version of Novo Nordisk's popular obesity drug Wegovy as part of its weight-management programs.

There are two drugs on the market - semaglutide, marketed under the brand name Wegovy, and tirzepatide, sold as Mounjaro. Semaglutide is also used in the diabetes treatment Ozempic. Both Wegovy and Mounjaro are given as weekly injections via pre-filled pens that can be self-administered into the upper arm,

A new study reveals that glucagon-like peptide-1 receptor agonists (GLP-1), which include weight loss and diabetes meds Ozempic, Wegovy, Mounjaro or Zepbound, may help users overcome alcoholism and opioid addiction.