What is the fine-grained topic of the following text: “I think one of the worries that many people have is that the advertising going on around e-cigarettes is reminiscent of what happened in the early days of tobacco and cigarette use, and we know how that affected the uptake of cigarette smoking by young people, how it glamorized smoking,” Hamburg said. Only return the topic.
Concerns about e-cigarette advertising influencing youth smoking.