Rivera AC, et al. - Given higher rates of new-onset asthma have been reported among the United States military service members who deployed in support of the recent conflicts in Iraq and Afghanistan compared with those who did not deploy but the role of combat experiences, in addition to deployment, as a contributor to new-onset asthma risk remained uncertain, researchers used Millennium Cohort Study participants from 2001 to 2013 and longitudinally determined the risk factors for developing asthma, including combat deployment (categorized as deployed with combat experience, deployed without combat experience, and nondeployed). They found that asthma development was 24%–30% more likely to occur in those who deployed with combat experience vs those who did not deploy, as found in adjusted models. Relative to nondeployers, a higher risk for new-onset asthma was observed in deployed personnel without combat experience.