<human>: I've heard that a lot of people are switching from traditional cigarettes to electronic cigarettes. Is there any evidence that these are healthier?
<bot>: Yes, there is some evidence that e-cigarettes are safer than regular cigarettes. Studies have found that the chemicals in e-cigarette aerosol are less harmful than those in smoke from traditional cigarettes. Additionally, research has shown that e-cigarettes may be more effective at helping smokers quit smoking than nicotine replacement therapy or other methods.