How Does Vaping Affect Your Lungs?

Why can vaping irritate your airways?

Vaping brings heated aerosol into contact with the mouth, throat and airways. Coughing, dry mouth or throat, irritation and shortness of breath are among the side effects described by the NHS. [1]

A symptom that starts after vaping is worth noticing, but timing alone cannot identify its cause. An infection, asthma or another condition may also be involved. The question for a clinician is not simply whether you vape, but what changed, when it changed and whether symptoms are getting worse.

What do studies of respiratory symptoms show?

A study following more than 2,000 adolescents and young adults over four years found an association between e-cigarette use and reported wheezing, bronchitis-like symptoms and breathlessness. Researchers accounted for several other exposures, including cigarettes and cannabis. [2]

This was an observational study based on questionnaires. It supports concern about respiratory symptoms, but it is not an experiment proving that vaping caused every reported symptom. The participants were young, so the findings should not be treated as an exact estimate for all ages. “Bronchitis-like symptoms” also does not mean every participant had a confirmed diagnosis of chronic bronchitis.

How does EVALI fit into the picture?

EVALI is the name used for e-cigarette, or vaping, product use-associated lung injury. The major US outbreak in 2019 was strongly linked to vitamin E acetate, an additive found in some THC-containing products, particularly products from informal sources. CDC did not rule out contributions from other chemicals in all cases. [3]

That history should neither be used to claim that all nicotine vaping produces the same injury nor to dismiss other respiratory effects. Acute outbreak-related lung injury and the possible consequences of years of regular use are different research questions.

What about permanent lung damage?

Research includes laboratory work, animal studies and studies of people. These approaches can reveal biological effects and patterns of symptoms, but long-term clinical evidence is still developing. Product designs and liquids have also changed over time. The American Heart Association calls for further research into chronic cardiopulmonary effects. [4]

For a reader, the practical distinction is between a possible mechanism and an established prediction. A laboratory finding cannot tell you whether your lungs are permanently damaged. A normal day without coughing cannot answer that question either.

For the broader context, see how vaping affects the body. If you previously smoked, the comparison with smoking is relevant to interpreting your exposure history.

When should breathing symptoms be checked?

Seek emergency medical care for severe breathing difficulty, a tight or heavy chest, pain spreading to the arm, back, neck or jaw, or sudden confusion. Do not assume these symptoms are simply irritation from a vape or a panic attack. New or worsening breathlessness also needs medical assessment. [5]

When arranging a visit, note which products you use, whether they contain nicotine or THC, any cigarette use, and when symptoms occur. Describe changes in everyday activities, such as becoming short of breath on a walk you normally manage comfortably.

What happens after stopping?

Stopping vaping ends further exposure to aerosol from your vape. How symptoms change depends on their cause and your health history. There is no single calendar that can predict an individual's lung recovery from the available evidence. [4]

Read what happens when you quit vaping for a separate discussion of withdrawal, routines and follow-up. Breathlessness should be assessed on its own merits rather than interpreted as evidence that the lungs are “detoxing.”