Researchers at the University of Virginia (VCU) found nicotine, alcohol and even traces of bacteria and feces in vapes confiscated from schoolchildren. The authors note that the results highlight a larger problem: the proliferation of illegal and dangerous devices among teenagers.
The study was led by Michelle Peace, a professor in VCU's Forensic Toxicology Laboratory. During the 2024-2025 school year, the team collected and analyzed nearly 1,300 e-cigarettes confiscated from Virginia schools.
"This study reveals what materials children actually have access to and helps us understand their preferences," Pease explained. "Vaping poses a serious threat to the public health and safety of our children."
Scientists were particularly concerned about the presence of bacteria, yeasts and coliforms (indicative of fecal contamination) not only in the liquid but also in the aerosol inhaled by the user. In some cases, concentrations of germs have exceeded acceptable levels, creating a risk of respiratory infections and inflammation.
Doctors note that adolescents are exposed to nicotine and toxic chemicals during the period of active development, which increases the risk of addiction and cognitive impairment.
Side effects include coughing, dizziness, difficulty breathing, chronic respiratory irritation, and lung damage. The VCU research also shows that the physiological age of vapers can be up to 10 years older than their actual age.
Although vaping is often touted as a less harmful alternative to cigarettes, scientists stress that vaping devices pose no less risks.
“It took decades to study the effects of smoking. It will take just as much time to understand the full risks of vaping," concluded Michelle Peace.
