<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>: There is some evidence that e-cigarettes may be safer than traditional cigarettes, but it’s still unclear how much safer they are. Studies have found that e-cigarettes may reduce the risk of cancer and other diseases, but it’s not yet clear if this is due to the nicotine or other chemicals in the e-cigarette vapor. It’s also possible that e-cigarettes could increase the risk of heart disease or lung problems, so it’s important to talk to your doctor before using them.