Hidden Dangers of Vaping: Harmful Substances Emitted by E-Cigarettes Under Scrutiny

Once considered a safer alternative to traditional smoking, e-cigarettes are now under increasing scientific scrutiny due to their potential health hazards. Recent research conducted by the University of Miami College of Engineering highlights that vaping may release harmful substances, including toxic metals and chemical toxins, into the air. Led by Ph.D. graduate Kapiamba Fabrice, the study explores the physical and chemical properties of e-cigarette aerosols and their toxicological impact on users and those nearby.

Fabrice's investigations, carried out under the guidance of Associate Professor Yang Wang, reveal that increasing the power setting on vaping devices elevates levels of harmful metals such as hexavalent chromium, lead, nickel, and copper in the vapor. These metals can pose serious health risks, as their forms and toxicity intensify at higher temperatures typical of stronger devices.

Further, his research shows that secondhand exposure to vaping aerosols can be nearly as dangerous as firsthand inhalation, exposing non-users to comparable levels of toxic metals. This challenges previous assumptions that vaping is safe in enclosed spaces and emphasizes the importance of environmental and health regulations.

In his latest findings published in Chemical Research in Toxicology, Fabrice analyzed emissions from individual puffs, uncovering sharp spikes in tiny particles and metal concentrations with each inhalation. These brief but intense exposure bursts are particularly concerning for young or new users who may inhale these toxins sporadically.

Beyond his work on vaping, Fabrice has contributed significantly to sustainable engineering through developing methods for extracting rare earth metals, crucial for modern technology like smartphones and electric vehicles. Currently, he applies his expertise to improve environmental practices in mining at Freeport-McMoRan, focusing on cleaner and more efficient extraction methods.

These studies underline the potential health risks associated with e-cigarette use and secondhand exposure. The release of toxic metals and particles from vaping devices points to the urgent need for comprehensive regulation and public awareness about the hidden dangers of vaping.

Source: https://medicalxpress.com/news/2025-06-cigarettes-emit-substances-safety.html