A report from Public Health England (part of the Department for Health and Social Care) https://assets.publishing.service.g...on_for_evidence_based_policy_and_practice.pdf Cliffs - There has been a rise in e-cigarette use that has been matched by a corresponding decrease in smoking. E-cigarettes are now the most popular quitting aid in England. There is good-quality evidence that e-cigarettes can be effective in helping people quit smoking. While data on their long-term safety is unavailable, expert opinion is that e-cigarettes are around 95% safer than smoking. When used as intended, e-cigarettes pose no risk of nicotine poisoning. E-cigarettes release negligible amounts of nicotine into the environment, and no health risks to bystanders (e.g. passive smoking) have been identified.