Know Your Vape

Vaping and Liver Damage: What US Vapers Should Know

By Know Your Vape · · Updated

Contents

There is currently no solid evidence that vaping causes liver damage in people. Research on vaping and the liver is at an early stage, and human evidence is very limited.

That doesn't make vaping safe. The CDC states that no tobacco product, including e-cigarettes, is safe, and vaping is not for non-smokers, anyone under 21, or pregnant people.

For adults who smoke, switching completely to vaping reduces exposure to many harmful chemicals. Scientists still have a lot to learn about long-term effects, including on organs like the liver.

Exploring the Scientific Research and Studies

Vape aerosol can contain nicotine, heavy metals such as nickel, tin, and lead, volatile organic compounds, and some cancer-causing chemicals. Inhaled substances can enter the bloodstream, and the liver processes many of them.

That is the reason researchers have asked whether vaping could affect the liver. So far, there is little human data to answer it.

Understanding the Potential Dangers

The liver filters and breaks down many substances in the blood. In theory, regular exposure to aerosol chemicals could add to its workload and cause inflammation or oxidative stress.

Some researchers have raised a possible link with non-alcoholic fatty liver disease (NAFLD). No study has shown that vaping causes fatty liver disease, cirrhosis, or liver cancer in humans.

Explore more about the negative effects of vaping and the potential long-term effects of vaping.

How Vaping Impacts the Liver

E-liquids usually contain nicotine, flavorings, propylene glycol, and vegetable glycerin. Heating them can create other chemicals, such as formaldehyde and acrolein.

Nicotine is highly addictive. Its effects on the liver in vapers have not been established in human studies.

Flavorings such as diacetyl are linked to serious lung disease. Their effect on the liver is not known.

Oxidative stress happens when harmful molecules called free radicals outnumber the body's defenses. The National Academies found substantial evidence that vaping causes oxidative stress, though at lower levels than smoking.

Formaldehyde and acrolein can damage cells and DNA in lab studies. Whether vapers absorb enough of these chemicals to harm the liver has not been measured.

In short, there are plausible ways vaping could affect the liver, but no human evidence that it does.

Risks of e-cigarettes

There are no symptoms specific to vaping and the liver. The signs below are general warning signs of liver problems from any cause.

Identifying Warning Signs

See a doctor if you notice yellowing of the skin or eyes (jaundice), dark urine, pale stools, or pain in the upper right side of your belly.

Other possible signs include ongoing fatigue, nausea, loss of appetite, unexplained weight loss, and itchy skin. A simple blood test can check how your liver is working.

Potential Long-Term Effects

Long-term liver disease from any cause can lead to scarring (fibrosis), cirrhosis, liver failure, and a higher risk of liver cancer.

No study has shown that vaping leads to these conditions. If you have liver disease, ask your doctor how nicotine use fits into your care.

To learn more about the dangers of vaping and its potential long-term effects on various aspects of health, visit KnowYourVape.com.

Prevention and Harm Reduction

Importance of regulation and safety measures

In the US, a vape must pass FDA premarket review before it can be legally sold, and the FDA keeps a list of authorized products. Federal Tobacco 21 law, in effect since December 2019, bans sales to anyone under 21.

Buying authorized products from licensed retailers lowers the risk of contaminated or counterfeit liquids. Products from informal sources, especially THC cartridges, were behind most cases in the 2019 lung injury outbreak (EVALI).

Alternatives to vaping

If you want to quit vaping, FDA-approved nicotine replacement therapy (NRT) is an option. It includes patches, gum, lozenges, inhalers, and nasal sprays, and it delivers nicotine without inhaling an aerosol.

Prescription medicines such as varenicline and bupropion can also help. Counseling plus medication gives you the best chance of quitting.

Seeking medical advice and support

If you are worried about your liver, talk to your doctor. They can order liver function tests and look at other causes, such as alcohol, medications, and weight.

For free quit support, call 1-800-QUIT-NOW or visit Smokefree.gov.

Conclusion

There is no proof that vaping damages the human liver. The research is early, human evidence is very limited, and much more is needed.

Vaping is still not risk-free. For adults who smoke, switching completely is less harmful than smoking, and the healthiest goal is eventually to stop nicotine altogether.

For more information on the dangers of vaping and its impact on various aspects of health, visit Know Your Vape. Stay informed, stay healthy.

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