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.
- Effect of Cannabis on E-Cigarette Use Behavioron April 2, 2025 at 4:00 am
Conditions: Cannabis Use; Tobacco Use; Electronic Cigarette Use Interventions: Drug: THC High Dose; Drug: THC Low Dose; Drug: THC 0mg; Drug: E-Cigarette Full Nicotine; Drug: E-Cigarette Placebo Nicotine Sponsors: Johns Hopkins University; National Institute on Drug Abuse (NIDA) Recruiting
- Hippocampal Network Changes Following Mindfulness Training in Tobacco Vaping Adolescents in an Open-label, Pilot Studyon April 2, 2025 at 4:00 am
Conditions: Vaping Teens; Healthy Volunteers Interventions: Behavioral: Mindfulness-based Stress Reduction (MBSR) Program Sponsors: National Institute on Drug Abuse (NIDA) Recruiting
- Adolescent Vaping Characterization and Parent Views on Adolescent Vaping Protocolon March 30, 2025 at 4:00 am
Conditions: Healthy Volunteers; Vaping Teens Sponsors: National Institute on Drug Abuse (NIDA) Recruiting
- Concentration Impact Nicotine Salton March 28, 2025 at 4:00 am
Conditions: Smoking Cessation; Vaping Interventions: Procedure: Smoking cessation counseling; Other: Open system vape device and nicotine salt e-liquids Sponsors: Insel Gruppe AG, University Hospital Bern; Swiss National Science Foundation Recruiting
- Cannabis THC Potency, Metabolism, and Cognitive Impairment in Young Adultson March 27, 2025 at 4:00 am
Conditions: Cannabis Use; THC; Marijuana Use; Cognitive Impairment; THC Vaping Interventions: Behavioral: 15% THC Potency Reduction; Behavioral: 35% THC Potency Reduction Sponsors: University of California, San Francisco; Cannabis Public Policy Consulting Recruiting
- Nicotine Patch Plus Nicotine Mouth Spray Versus Nicotine Reduction for Vaping Cessationon March 27, 2025 at 4:00 am
Conditions: Vaping Cessation Interventions: Combination Product: Nicotine patches plus nicotine mouth spray; Other: Nicotine Tapering Plan Sponsors: University of Auckland, New Zealand; University College, London; Medical University of South Carolina; Flinders University Recruiting
- Non-invasive Vagus Nerve Stimulation (nVNS) and Cognition in Young Adult Vapers - A Pilot Studyon March 26, 2025 at 4:00 am
Conditions: Vaping Interventions: Device: Active nVNS; Device: Control nVNS Sponsors: Temple University Recruiting
- Effects of E-cigarette Use on Healthon March 25, 2025 at 4:00 am
Conditions: Electronic Cigarette Use Interventions: Other: Health Assessments Sponsors: University of Wisconsin, Madison; National Heart, Lung, and Blood Institute (NHLBI) Recruiting
- Kick-Nic! Youth Quit Vaping Appon March 25, 2025 at 4:00 am
Conditions: Nicotine Vaping Interventions: Behavioral: Kick-Nic! mobile phone application; Behavioral: NCI Quit Vaping website Sponsors: Yale University; National Cancer Institute (NCI) Recruiting
- The Impact of Chronic E-Cigarette Usage on Microvascular Healthon March 25, 2025 at 4:00 am
Conditions: E-Cig Use Interventions: Other: E-cig use Sponsors: Virginia Commonwealth University Recruiting
- BREATHE Free: a Pilot Feasibility Trialon March 25, 2025 at 4:00 am
Conditions: Smoking Cessation; Tobacco Dependence; E-Cig Use; Nicotine Dependence, Other Tobacco Product Interventions: Behavioral: BREATHE Free Curriculum Sponsors: Augusta University Recruiting
- Perceptions of Vaping Productson March 25, 2025 at 4:00 am
Conditions: Abuse Tobacco; Exposure Interventions: Other: Biospecimen Collection; Other: Survey Administration; Behavioral: Vaping Topography; Other: Participant's Own Preferred E-cigarette; Other: Nicotine E-cigarette; Other: 6-methyl-nicotine (metatine) e-cigarette Sponsors: Ohio State University Comprehensive Cancer Center 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