The document discusses smoking trends and health effects in Britain. It notes that around 10 million adults smoke daily, with most starting before age 18 due to peer pressure. Smoking is the largest cause of death in the UK due to health issues like cancer and asthma. While smoking rates have declined by around 30% since 1974, many current smokers want to quit but have difficulty doing so. The 2007 law banning smoking in public places contributed to a further decrease and rise of e-cigarette use as an alternative to smoking. However, the safety of e-cigarettes remains unclear.