Asthma and Obesity
Obesity increases the risk of developing asthma and makes existing asthma harder to control — and losing weight can meaningfully improve asthma symptoms.
Plain English
Patient-Friendly Explanation
People living with obesity are more likely to develop asthma, and those who already have asthma often find it harder to control. Extra weight can press on the chest and contributes to inflammation that affects the airways. Losing even a modest amount of weight can improve breathing, reduce flare-ups and cut the need for reliever medication.
Medical
Clinical Definition
Obesity is a well-established risk factor for incident asthma, with meta-analyses showing a relative risk of approximately 1.5–2.0, and it is associated with more frequent exacerbations, greater healthcare use and a reduced response to standard inhaled therapy. Contributing mechanisms include the mechanical effects of truncal adiposity on lung volumes, systemic and airway inflammation (leptin, IL-6, TNF-α), and altered airway smooth-muscle function. Randomised trials of structured weight-management programmes show that a 5–10% weight loss improves asthma control, quality of life and airway responsiveness.
Key Insight
Why It Matters
If you have asthma and are struggling with your weight, the two conditions are often linked — treating one can help the other. At Accord Medical, Dr Joseph Wang looks at weight and respiratory health together as part of a personalised plan.
Sources
Reviewed against standard medical references.
Medically reviewed by
Family Physician & Registered Acupuncturist, Accord Medical Clinic. MBBS (NUS), Graduate Diploma in Family Medicine (NUS), Graduate Diploma in Acupuncture (Singapore College of TCM).
Last reviewed: August 2026
This page is general health education, not medical advice. Whether any treatment is appropriate for you is a decision made in consultation after assessment.