New neuroimaging research from Penn State College of Medicine reveals that common chemical flavor additives in e-cigarettes—such as fruity ester compounds like hexyl acetate—can alter the human brain’s reward system in ways remarkably similar to nicotine. Using functional MRI scans before and after controlled vaping sessions, scientists observed that participants exposed to neuroactive flavorings displayed heightened neural responsiveness to rewards, a hallmark trigger of chemical dependency. Pulmonologists warn that unregulated synthetic additives may significantly amplify addiction risks among teenagers and young adults.
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