Adults with high blood eosinophil counts (BECs) may have a higher risk for incident asthma, according to a study published in Respiratory Medicine.

In this retrospective open cohort study, investigators identified adults aged ?20 years who were free from asthma at the time of their first medical examination (N=57,975), using data from a Chinese multicenter longitudinal study collected between January 2004 and December 2015. The time point of asthma onset was established by self-reports of incident asthma and confirmed as the first incidence of physician-diagnosed asthma at follow-up.

The findings of this study suggest that high BECs may predict incident asthma in adults and that blood eosinophils may be implicated in the disease pathogenesis.