Electronic cigarettes, commonly known as e-cigarettes or vapes, present numerous adverse consequences for users and public health. While often perceived as a safer alternative to combustible cigarettes, their use is not without significant risks.
Physiological Consequences
Respiratory System:

- The aerosol inhaled from e-cigarettes can contain harmful substances that irritate and damage the lungs. This may lead to inflammation and conditions such as chronic bronchitis.
- Certain flavouring chemicals, like diacetyl, have been linked to serious lung diseases such as bronchiolitis obliterans.
- E-cigarette use can exacerbate existing respiratory conditions like asthma and may impair lung function over time.
Cardiovascular System:
- Most e-cigarettes contain nicotine, a highly addictive stimulant that increases heart rate and blood pressure, placing stress on the cardiovascular system.
- Long-term use of nicotine-containing e-cigarettes may contribute to an increased risk of cardiovascular events, including heart attacks and strokes.
- Studies suggest that components of e-cigarette aerosol can negatively affect blood vessel function.
Brain Development and Addiction:
- Nicotine Addiction: E-cigarettes are effective nicotine delivery devices, leading to a high potential for addiction. This is particularly concerning for young users whose brains are still developing.
- Brain Development Impairment: Nicotine exposure during adolescence and young adulthood can disrupt brain development. This can have lasting effects on attention, learning, mood regulation, and impulse control.
Other Health Risks:
- Exposure to Toxicants: E-cigarette aerosol is not merely water vapor. It can contain carcinogens, volatile organic compounds, and heavy metals such as nickel, tin, and lead.
- Oral Health: Vaping can contribute to various oral health problems, including gum inflammation, dry mouth, and an increased risk of cavities.
- Pregnancy Complications: Nicotine exposure during pregnancy is detrimental to fetal development and can lead to adverse birth outcomes.
Additional Concerns
Accidental Poisoning:
- E-liquids, which often contain high concentrations of nicotine, are toxic if ingested or absorbed through the skin. Accidental exposure poses a severe poisoning risk, especially to children.
Device Safety:
- There have been incidents of e-cigarette batteries overheating, catching fire, or exploding, leading to serious injuries and burns.
Potential Gateway to Smoking:
- For non-smokers, particularly youth, e-cigarette use may increase the likelihood of initiating smoking of traditional combustible cigarettes.