Asthma, obesity and targeted interventions: an update

Purpose of review Obese asthma is now widely recognized as a phenotype of difficult asthma that is common and less responsive to traditional asthma treatments, so identifying specific treatments is increasingly important. Recent findings Obesity can lead to asthma through a complex relationship of causes including mechanical, inflammatory, metabolic and genetic factors. Exercise programmes including pulmonary rehabilitation, weight loss via dietary restriction, exercise and bariatric surgery, or combinations of all of these can improve quality of life, symptoms, and exercise capacity, with reductions in medication use and exacerbations, and represent tailored treatment for this phenotype of severe difficult to treat asthmatic patients. Summary Exercise programmes and pulmonary rehabilitation, weight loss programmes targeting 5–10% weight loss and bariatric surgery are effective treatments for the obese asthma phenotype.

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