Mounjaro could help obese people control asthma says study
As an estimated 1.5 million people in the UK are now using weight loss drugs. A number of types of the drug are recommended to help tackle obesity on the NHS, including semaglutide, or Wegovy, and tirzepatide, or Mounjaro.
Weight-loss jabs, also known as glucagon-like peptide1 receptor-agonists (GLP1-RAs), work by mimicing the hormone GLP-1 to regulate blood sugar and insulin levels. They were initially developed as a treatment for people with type 2 diabetes.
Previous studies have suggested the drugs may slash the risk of illnesses like dementia and stroke, with an international team of experts exploring their potential impact on obese people with asthma.
Professor David Price, University of Aberdeen chair in primary care respiratory medicine, said: 'People with obesity and asthma are unique in that they are often resistant to steroid treatments.
'We know that GLP1s work on inflammatory responses in the airways in a different way to traditionally used steroids.'
For the study, published in Advances in Therapy, researchers analysed the records of 10,111 people on GLP1-RAs and 50,555 people who were not on the drugs.
📢Important update
Eligible people in #Dorset will be able to access Tirzepatide (Mounjaro) weight management medication from autumn 2025.
✅Around 1,000 people in Dorset will qualify under strict national criteria
✅No need to contact your doctor
More: https://t.co/ml4QJgZ224 pic.twitter.com/uURpuIuYzx — NHS Dorset (@NHSDorset) June 23, 2025
After a follow-up period, the team found that those taking weight-loss jabs lost more weight and had improved asthma control.
Researchers said the findings suggest medics 'should pay attention to the relationship between GLP-1 RA and the risk of respiratory diseases'.
Prof Price added: 'We found compelling evidence that GLP1s, as well as increasing weight loss, also improved asthma symptoms.
'In addition, it is important to note that the benefits to asthma symptoms occurred despite fairly modest weight loss of around 0.9kg over the course of the year.
'Our findings suggest that GLP1s may have beneficial effects on asthma control for people with obesity and this should be explored further.'
Prof Alan Kaplan, chairperson of the Family Physician Airways Group of Canada and the Observational and Pragmatic Research Institute, said: 'Our findings suggest that GLP1-RAs have benefits on asthma control in people with obesity, and this information should contribute to the discussions around the decision to use these drugs.'
Dr Erika Kennington, head of research and innovation at Asthma and Lung UK, said: 'Research has previously shown that people living with obesity who lose weight see improved control of their asthma, so it's encouraging to see this study show this is still the case when the weight loss is driven by drugs, like the new class of weight loss drugs.
'Although exercise can help people lose weight, for some people it can cause anxiety about becoming breathless or having an asthma attack, so people are stuck in a vicious cycle of not being able to lose weight and their asthma worsening.
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'Therefore, where exercise hasn't worked for someone these drugs that support weight loss could offer a promising alternative.
'It's too early to say whether these drugs would be effective for people with asthma more widely.
'More research is needed to understand how these drugs actually improve asthma control. Funding for lung health research is on life support and urgent action is needed to increase investment.'
Who is eligible for Mounjaro on the NHS?
At the moment, the rules are very strict, and treatment is being rolled out gradually by NHS England. NICE has recommended tirzepatide (Mounjaro) for weight management for eligible adults living with obesity, who also present with other weight-related health problems, including:
dyslipidaemia (abnormal fat levels in the blood)
hypertension (high blood pressure)
obstructive sleep apnoea (when your breathing stops and starts while you sleep)
cardiovascular disease (heart and blood vessel disease)
type 2 diabetes mellitus
Speak to your doctor for more information.
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