What is Vaping?
Vaping refers to inhaling and exhaling aerosolized particles from an e-cigarette. An e-cigarette is an electronic device filled with a nicotine-based liquid that is vaporized when the device is used.
Vaping was initially hailed as an important innovation. It was believed smokers could use e-cigarettes as an alternative to tobacco. This would reduce exposure to nicotine, tar, and other hazardous substances.

What’s more, many smokers considered vaping soothing, giving them “something to do with their hands” and a way to react in stressful situations where they would usually smoke. Some people succeeded in using vaping as a stepping stone to quit smoking.
With that said, the long term effects of vaping have not been fully studied. While many individuals view vaping as a step in the right direction to eliminate smoking, more research needs to be compiled on the effects it can have on individuals and society as a whole.
What Conditions is Vaping Associated With?
The unique condition associated with vaping is referred by the new medical acronym EVALI.
It stands for E-Cigarette or Vaping Associated Lung Injury.
As of October 22, 2019, 34 known deaths were associated with EVALI. The median age of victims was 45 and 59% of them were men.
In total, nearly 2,300 cases of EVALI were reported to the CDC by November 20, 2019. All 50 states have been affected except Alaska.
Samples of lung tissue taken from victims have tested positive for high amounts of vitamin E acetate, a toxin in some vaping products. Vitamin E acetate is believed to be safe when used in nutritional supplements or skincare products, but not when ingested.
Lung damage caused by EVALI can cause symptoms similar to pneumonia. Damage to the lungs makes it difficult for the body to take in oxygen and distribute it throughout the body.
EVALI is distinct from, but related to, bronchiolitis obliterans – also known as popcorn lung. This is an inflammatory condition that affects the tiniest airways within the lungs. Inflammation can lead to scarring that blocks airways, causing coughing and shortness of breath.
What Research Currently Exists Around Vaping?
The association between vaping and EVALI is already an established scientific fact. However, it is not yet clear exactly what risk factors contribute to the development of EVALI.
Current research focuses on finding a definitive answer for what chemicals or other factors may be responsible for EVALI. This will help the medical community understand why some e-cigarette enthusiasts are affected and others are not, paving the way for effective treatment.
Why Are Further Vaping Clinical Trials Important?
Vaping clinical trials will be essential to the long-term health and quality of life of those affected by EVALI or popcorn lung. Evidence of disease has been found in teens as well as elderly adults.
Unfortunately, there is no treatment capable of reversing the lung damage caused by EVALI. As with other pervasive lung disorders, such as COPD, therapies are likely to focus on preserving healthy lung function.
Current Vaping Clinical Trials
This is the current list of active vaping clinical trials on record with ClinicalTrials.gov.
Patients are advised to watch this space carefully, since new clinical resources for vaping health are being developed rapidly.
- The Use of tDCS for Vaping Reductionon March 19, 2026 at 4:00 am
Conditions: Vaping; Addiction; Transcranial Direct Current Stimulation(tDCS) Interventions: Device: Active tDCS; Device: Sham tDCS Sponsors: Centre for Addiction and Mental Health Recruiting
- Dissolved Phase HXe-129 MRI: A Novel Biomarker to Quantify Pulmonary Pathologyon March 17, 2026 at 4:00 am
Conditions: Electronic Cigarette Related Lung Damage Interventions: Drug: Hyperpolarized xenon 129; Diagnostic Test: Cardiopulmonary Stress Test; Diagnostic Test: Pulmonary Function Test; Diagnostic Test: Chest CT Sponsors: Y. Michael Shim, MD; Duke University; George Mason University Recruiting
- Noncombustible Nicotine Delivery Systems as Potential Harm Reduction Tools for Persistent Cigarette Smokerson March 12, 2026 at 4:00 am
Conditions: E-cigarette Use; Cigarette Smoking; Harm Reduction; Tobacco Use Interventions: Other: E-cigarettes; Other: Oral nicotine pouches Sponsors: Abramson Cancer Center at Penn Medicine; National Cancer Institute (NCI); University of Pennsylvania Recruiting
- Vaping and Smoking Withdrawal Projecton March 9, 2026 at 4:00 am
Conditions: Acute Abstinence From Cigarettes vs E-cigarettes (ENDS) Interventions: Behavioral: Acute (24-hour) abstinence; Behavioral: Ad libitum smoking/vaping Sponsors: State University of New York at Buffalo; Roswell Park Cancer Institute; National Institute on Drug Abuse (NIDA) Recruiting
- Vaping and Smoking Project in People With Schizophreniaon March 9, 2026 at 4:00 am
Conditions: Acute Abstinence From Cigarettes vs E-cigarettes (ENDS) Interventions: Behavioral: Acute (24-hour) abstinence; Behavioral: Ad libitum smoking/vaping Sponsors: State University of New York at Buffalo; Roswell Park Cancer Institute; National Institute on Drug Abuse (NIDA) Recruiting
- Non-invasive Vagus Nerve Stimulation (nVNS) and Cognition in Young Adult Vapers - A Pilot Studyon March 6, 2026 at 5:00 am
Conditions: Vaping Interventions: Device: Active nVNS; Device: Control nVNS Sponsors: Temple University Recruiting
- Developing and Testing Health Warning Labels on the ENDS Deviceon February 20, 2026 at 5:00 am
Conditions: Electronic Cigarette Use Interventions: Other: Preferred ENDS; Other: Preferred ENDS with HWL Sponsors: Florida International University; University of Miami Recruiting
- The Role of Flavor in the Substitutability of E-cigarettes for Combustible Cigarettes Among Persistent Smokerson February 19, 2026 at 5:00 am
Conditions: Smoking; Tobacco Use; Cigarette Smoking; E-Cig Use Interventions: Other: E-cigarettes Sponsors: Abramson Cancer Center at Penn Medicine; National Cancer Institute (NCI); University of Pennsylvania Recruiting
- Examining Heavy Metal Exposure and Respiratory Health in Young Adult Electronic Cigarette Userson February 17, 2026 at 5:00 am
Conditions: Heavy Metal Exposure From Vaping Interventions: Other: Non-Interventional Study Sponsors: Ohio State University Comprehensive Cancer Center Recruiting
- Screening, Evaluation and Assessment (SEA) Protocol at the NIDA IRPon February 17, 2026 at 5:00 am
Conditions: Substance Use Disorder; Alcohol Use Disorder Sponsors: National Institute on Drug Abuse (NIDA) Recruiting
- Vape Use Among Younger & Older Smokerson February 10, 2026 at 5:00 am
Conditions: Smoking Cigarette; Smoking Behaviors; Vaping; Vaping Behaviors Sponsors: Abramson Cancer Center at Penn Medicine; The Center for Coordination of Analytics, Science, Enhancement and Logistics (CASEL); Food and Drug Administration (FDA) Recruiting
- Development of a Mobile Health Intervention for Electronic Cigarette Use Among Young Adultson January 30, 2026 at 5:00 am
Conditions: Electronic Nicotine Delivery Systems; Tobacco Products; Cigarette Smoking Interventions: Behavioral: EQUIP; Behavioral: Standard Care Sponsors: University of Chicago Recruiting
Conclusion
It is not yet known whether EVALI represents a widespread health risk that could affect millions of users or is isolated to certain products or practices. Whatever the case, thousands of people face severe health effects right now.
Today’s vaping clinical trials will be essential to the health of former and future e-cigarette users. Being aware of the potential risks of vaping – and making family and friends aware of those risks – is advisable as more information becomes available.
Sources
- https://www.centeronaddiction.org/e-cigarettes/recreational-vaping/what-vaping
- https://www.drugabuse.gov/publications/drugfacts/vaping-devices-electronic-cigarettes
- https://www.cdc.gov/tobacco/basic_information/e-cigarettes/severe-lung-disease.html
- https://www.cdc.gov/media/releases/2019/p1028-first-analysis-lung-injury-deaths.html
- https://rarediseases.info.nih.gov/diseases/9551/bronchiolitis-obliterans
- https://www.cdc.gov/mmwr/volumes/68/wr/mm6841e3.htm?s_cid=mm6841e3_w