WHO backs use of weight-loss drugs for adults globally, raises cost issue
Jennifer Rigby,
Reuters
In clinical trials, people lost 15 percent to 20 percent of their body weight, depending on the drug.
Photo:
VADIM KUSHNEROV
The World Health Organisation plans to officially back the use of weight-loss drugs to treat obesity in adults for the first time, a memo reviewed by Reuters on Thursday (US time) showed, marking a shift in its approach to treating the global health problem.
The UN agency also called for strategies to
improve access to the treatment
in low- and middle-income countries.
More than a billion people now have obesity worldwide, according to the WHO, and around 70 percent of them live in low and middle-income countries, the World Bank estimates.
The wildly
popular obesity drugs
- Wegovy developed by Novo Nordisk and Zepbound by Eli Lilly - are known as GLP-1 receptor agonists, which mimic the activity of a hormone that slows digestion and helps people feel full for longer.
In clinical trials, people lost 15 percent to 20 percent of their body weight, depending on the drug.
The drugs were first launched in the United States with a monthly price tag of over US$1000 (NZ$1680), and still can cost hundreds of dollars in high-income countries.
Studies suggest people may have to take the drugs for the rest of their lives to keep the weight off.
"WHO has been working on a set of new recommendations for obesity prevention, care and treatment in different age groups "children, adolescents, and adults since 2022," a WHO spokesperson said in an email.
The recommendations for the drugs, which will be finalised by August or September this year, will include "how and when this class of medications may be integrated as one component of a chronic care model that includes both clinical and lifestyle interventions".
Eli Lilly said on Friday it was committed to expanding global access to its medicines without giving further detail.
Novo Nordisk did not respond to a request for comment.
Separately, WHO experts will also meet next week to decide whether to include the GLP-1 drugs in the agency's essential medicines list - both to treat obesity and type 2 diabetes.
The WHO's essential medicines list is a catalogue of the drugs that should be available in all functioning health systems, and it can help make drugs more widely available in poorer countries, as experts say happened in 2002 when HIV drugs were included.
In 2023, the experts decided against adding obesity drugs to the list, with WHO saying more evidence was needed on their long-term clinical benefit.
However, in the new memo recommending their use as a treatment, the agency says it supports including them on the list this time round.
Still, the WHO also raises concerns over the cost of the drugs and calls for longer-term studies on cost-effectiveness "across all settings, including LMICs" (low- and middle-income countries).
"The same mechanisms that are used in large-scale medicine access programmes may need to be adopted," to improve access, the WHO added, such as tiered pricing or pooled procurement.
But it also noted that the active ingredient in one of the newer drugs, semaglutide - used in Novo's Wegovy - comes off patent in some markets next year.
Several companies are planning to launch cheaper generic versions of the drugs then.
Liraglutide, the active ingredient in the older generation of drugs, is already available as a lower-cost generic drug, with products approved in the US and Europe, the memo added.
- Reuters
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