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For any individual quit attempt, failure to quit is more likely than successful cessation. Most smokers make repeated quit attempts before finally achieving long-term abstinence.
Relapse in the first weeks of a quit attempt is common. Relapse is associated with the severity of withdrawal symptoms and other factors, such as stress and weight gain, may be more important. There is no intervention that is proven to prevent relapse,176 but advice and pharmacotherapy are recommended to treat symptoms of withdrawal, stress and weight gain.177