Thousands decide to quit the demon weed on National No Smoking Day. BBC News Online's health team looks at the issues surrounding a killer that costs the NHS £1.7bn every year.

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Pregnant women targeted
The government is to use No Smoking Day to announce the launch of a helpline to give advice to pregnant women who want to quit the habit.

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Smokers ignorant of health risks
Only a half of smokers know the symptoms of lung cancer, the number one tobacco-related killer, according to a survey.

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Is price a deterrent?
A major study is set to establish whether price hikes deter children from taking up the habit.

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The gender gap
Women are more emotionally dependent on cigarettes than men, a study reports.

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