As the number of young people using electronic nicotine delivery systems grows, so does evidence that e-cigarettes may be harmful to human health.
More studies are needed to determine the long-term impact these devices may have on the heart and lungs, according to a new science report.from the American Heart Association, published Monday in the journal Circulation, highlights the latest usage data and scientific evidence showing health effects of e-cigarette use, also called vaping. It also recommends research priorities to better understand how these products may affect people's health over time.
"E-cigarettes deliver numerous substances into the body that are potentially harmful, including chemicals and other compounds that are likely not known to or understood by the user," Dr. Jason J. Rose, chair of the statement writing committee, said in a news release. He is an associate professor of medicine and the associate dean of innovation and physician science development at the University of Maryland School of Medicine in Baltimore.
Vaping mimics cigarette smoking using battery-operated systems that heat liquid to create an aerosol inhaled into the lungs. These systems most often deliver nicotine, which has been shown to have negative health effects as well as being highly addictive. But the devices also can be used to deliver tetrahydrocannabinol, or THC, the psychoactive element in marijuana, and other substances, such as methamphetamine, methadone or vitamins. The liquids include humectants that act as solvents to create a water aerosol or vapor, flavoring agents, cooling agents such as menthol and sweeteners, and metals from the heating coil, along with other chemicals.
"Young people often become attracted to the flavors available in these products and can develop nicotine dependence from e-cigarette use," Rose said.
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