As the westernization of India accelerates, tobacco advertising and marketing have been linked to increased tobacco use by urban Indian children as young as 11, according to a study released today by researchers at The University of Texas School of Public Health.

Of the 1.5 million smokers supported by NHS stop smoking services between 2003 and 2006, researchers found that smokers from poorer areas were using these services - and successfully quitting - more often than those from more affluent communities.

Acupuncture? Nicotine patches? Telephone therapy? Antidepressants? Cognitive behavioural therapy? Which work? Which have no effect? Which are dangerous? Confused? Over 40 Cochrane reviews analyse the evidence.