human
I've been hearing about the dangers of e-cigarettes. What are the facts?
assistant
The most common fact is that they contain nicotine, which is addictive. Nicotine can cause health problems when used in high doses and long-term use has also been linked to an increased risk of heart disease and stroke. Additionally, some research suggests that vaping may be harmful to lungs, but more studies need to be done before any definitive conclusions can be made.