Long-Term Stroke and Cancer Risks Keep Falling
The CDC places lower stroke risk and major reductions in several head-and-neck cancer risks in the five-to-ten-year window.

What happens to your body 5 years after quitting smoking
Five years begins a CDC window in which stroke risk decreases and the added risk of cancers of the mouth, throat and voice box falls substantially. The CDC gives five to ten years for these changes, so the five-year mark is not a universal point of normalization.
Health timelines are population-level guides. Individual recovery varies with smoking history, health and treatment. Review the general guidance from the CDC and NHS.
Frequently asked questions
Is stroke risk the same as a never-smoker's at five years?
Not necessarily. The CDC says stroke risk decreases after quitting and can approach that of never-smokers over time, without assigning one identical date to everyone.
Which cancer risks begin to fall?
The CDC describes reduced risks across many smoking-related cancers, with different timelines for different cancer types.