Metabolic and weight components' impact on incident asthma using a real-world cohort

Ann Allergy Asthma Immunol. 2024 Sep 16:S1081-1206(24)01509-6. doi: 10.1016/j.anai.2024.09.005. Online ahead of print.

Abstract

Background: Obesity and metabolic dysregulation (MetD) have increasing prevalence and adversely impact asthma morbidity and therapeutic response.

Objective: To determine the role of weight and MetD on incident asthma in adulthood.

Methods: In a retrospective, longitudinal cohort of patients, we performed a time-to-asthma diagnosis analysis after a three-year landmark period (t0-t3) during which weight and MetD components were examined. We assessed incident asthma risk with MetD components and weight.

Results: 90,081 patients met inclusion criteria with 836 (0.93%) cases of incident asthma in our primary cohort. Diabetes present at t0, but no other MetD components, was associated with increased risk of asthma (HRadj = 1.85, 95% CI: 1.27 - 2.71, p=0.0002). The effect of weight on asthma risk, independent of other MetD components, identified individuals who are overweight or obese as having a 10-year attributable risk of 15.4%. Metformin was prescribed more frequently and hemoglobin A1c levels were lower in patients with diabetes who did not develop asthma (p<0.0001).

Conclusion: Weight and diabetes prevention and management represent modifiable risk factors for adult asthma development.