Neither vaping nor smoking is good for your lungs, but smoking is generally considered much worse due to thousands of chemicals and known long-term damage, while vaping introduces different, still harmful substances (like heavy metals, flavorings, volatile compounds) that cause inflammation, lung injury (EVALI), and potential damage, with its long-term effects still being studied, though some evidence suggests vaping might cause more short-to-medium term harm or similar lung function issues compared to smoking.
But vaping might actually be worse for your lungs.
Many people assumed this was a safer way to smoke. “Because of the chemical composition, vaping is similar to inhaling an acetylene welding torch,” explains Dr. Thau.
However, the lungs may heal quicker without any exposure to inhaled chemicals, and the FDA has not approved vaping as an effective smoking cessation treatment. Quitting through approved treatments such as NRT gum or patches will help support the lungs' healing process without putting them at risk.
Scientists have estimated that using vaping products exclusively is about 95% less likely to result in death from tobacco use compared to smoking cigarettes. 95% less likely to result in death from a tobacco-related disease compared to smoking cigarettes.
Vaping has been linked to greater risk of chronic lung diseases like asthma or chronic bronchitis, as well as heart problems including heart failure, and continuing to vape after an EVALI diagnosis may cause permanent scarring in your lungs. Vaping may also lower some measures of lung function over time.
Research indicates that lung function starts to improve two or three weeks after quitting. However, symptoms like coughing and breathing difficulties can remain for a year or longer as the lungs continue to repair damage where they can.
Heavy vaping can be harmful to health, so it's important to practice moderation. Vapers should aim to keep their puff count within a safe range. Studies suggest that approximately 140 puffs per day are safe for most vapers.
There's no exact number, but roughly 10-15 vape puffs can equal one cigarette, though this varies greatly; it could be as few as 4 puffs with high-nicotine liquid or up to 50 puffs with weaker liquid, depending on puff duration, device power (pod vs. mod), and e-liquid strength (like 5% vs. 12mg/mL). A single cigarette delivers about 1-2 mg of nicotine, while a vape's nicotine delivery changes significantly with user style and device settings.
Five negative effects of vaping include nicotine addiction, serious lung damage (like EVALI or "popcorn lung"), increased risk of heart problems, exposure to cancer-causing chemicals, and harm to adolescent brain development, leading to issues with learning, mood, and memory. Vaping also causes immediate issues like coughing, shortness of breath, nausea, and even explosions/burns from faulty devices.
Vaping exposes users to fewer toxins and at lower levels than smoking cigarettes. Switching to vaping reduces your exposure to toxins that can cause cancer, lung disease, and diseases of the heart and circulation like heart attack and stroke.
Vapes with nicotine can be as addictive as cigarettes, which doesn't do anything to help you quit. In fact, some e-cigarettes can deliver even more addictive nicotine, making it even harder to give them up.
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Because vaping is far less harmful than smoking, your health could benefit from switching from smoking to vaping. And you will reduce your risk of getting cancer. Switching from cigarettes to e-cigarettes could also save you a lot of money.
Research has shown that pneumonia, bronchitis, and other lung infections are more common in people who vape. Though these effects might not immediately be life-threatening, doctors worry about the long-term consequences. “A lot of acute bronchitis will at some point become chronic bronchitis and COPD,” he warns.
1: Vaping is less harmful than smoking, but it's still not safe. E-cigarettes heat nicotine (extracted from tobacco), flavorings and other chemicals to create an aerosol that you inhale. Regular tobacco cigarettes contain 7,000 chemicals, many of which are toxic.
If you're worrying about your daily vape puff count, there's no official “normal”. Most people vape between 100-500 puffs a day, but it can vary widely based on: device. nicotine strength.
Vaping and Popcorn Lung
Diacetyl is frequently added to flavored e-liquid to enhance the taste. Inhaling diacetyl causes inflammation and may lead to permanent scarring in the smallest branches of the airways — popcorn lung — which makes breathing difficult. Popcorn lung has no lasting treatment.
The particles you inhale while vaping can cause inflammation (swelling) and irritation in your lungs. This can lead to lung damage like scarring and narrowing of the tubes that bring air in and out of your lungs.
Especially for beginners in vaping, it is advisable not to exceed an upper limit of 60 to 80 puffs per day. Excessive consumption of puffs can cause negative side effects such as throat irritation, dizziness and nausea, especially at the beginning.
What Is Considered Heavy Vaping? While there is no definite metric to determine heavy vaping, using more than 10 mL of e-liquid or refilling multiple times a day is typically considered heavy vaping. However, the vapers used can add nuance.
Markers of nicotine addiction were associated with feeling highly addicted to vaping, but most users considered e-cigarettes less addictive than tobacco.
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Cycling through multiple 600-puff disposable vapes a day, for example, can lead to heightened nicotine levels and potential health risks. Keeping the number of puffs you draw under 600 per day is a good rule of thumb.
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