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How long do I have to quit smoking until my lifespan goes up significantly?

Studies tend to look at risk of death ("mortality") rather than lifespan, but in those terms, the chance of dying decreases significantly within even a few years. One study showed a 13% reduction in risk of death from all causes just five years after quitting (almost 50% for heart-related causes!). Other studies have looked at the difference in the rate of decline of lung function, where lungs will improve from an increased rate of decline to a slower, closer-to-normal rate of decline within a relatively short period of time.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.