The association between e-cigarette use among Chinese college students and lung function and physical activity: A cross-sectional study.

Summary: Vaping is super popular among college students, but is it actually safe? To find out, researchers checked the lungs and exercise habits of 122 students. About half of them vaped regularly, and the other half had never touched tobacco or e-cigarettes.

The results were eye-opening. Students who vaped had significantly more breathing problems, like shortness of breath. Even worse, the longer they had been vaping, the worse their breathing symptoms became. When doctors used special, highly sensitive tests on their lungs, they found early signs of damage and swelling in the tiny airways of the vaping students—even though their standard lung tests looked normal.

While vaping didn't seem to change how much the students exercised, it definitely irritated their lungs. The main takeaway? Vaping is not harmless and can cause real damage to your breathing, even if you are young and active.