Yes. I agree with many of the things that Professor Britton has said. In terms of the risk of nicotine, it's not the killer in tobacco. However, I think it has not been researched thoroughly in some aspects.
We know that nicotine seems to play a small role as a tumour promoter, but the main concern, I would say, as indicated by the Surgeon General's report of this year, is the access to nicotine by young people in phases in which their neurological system, especially the brain, is not fully matured, and how that can have an impact on the brain's development, leading to some issues of learning disabilities. The report of the Surgeon General of the United States made a strong point about this being a concern. That's why the concern in regard to nicotine is about youth, mainly—and, obviously, pregnant women—not necessarily adults.