Timeline
Lung recovery timeline visualizer
Enter smoke-free days to see which recovery milestones you've reached. Milestones summarize public-health narratives from the US Surgeon General, CDC, and NHS — use them alongside, not instead of, medical advice.
Lung recovery timeline visualizer
Enter smoke-free days and review milestone-by-milestone progress.
Milestones reached: 3 / 6
24 hours
Carbon monoxide drops and oxygen delivery improves.
48 hours
Taste and smell can start recovering.
1 week
Many cravings become less intense than day 1.
2 weeks
Circulation and breathing comfort can improve.
1 month
Daily movement may feel easier with less irritation.
1 year
Sustained progress supports long-term heart health trends.
How to use this visualizer
- Count your smoke-free days. If you are not using the Blou app, subtract your quit date from today. Partial days count as the next whole day.
- Enter days smoke-free. Enter the number in the input field. The tool will update the milestone list in place.
- Review reached milestones. Each filled milestone shows what typically changes in your body at that point. Read the underlying CDC and Surgeon General references for more detail.
- Open guide for each milestone. For a richer explanation, open the milestone guide under /guides (e.g. 'What happens after 1 week').
Source references
- CDC: Benefits of Quitting · US Centers for Disease Control
- US Surgeon General's Report on Smoking Cessation (2020) · US HHS
- NHS: Quit smoking · UK National Health Service
Frequently asked questions
How accurate is this timeline?
The milestones on this page summarize public-health narratives from the US Surgeon General, CDC, and NHS. Individual recovery varies with age, pack-years smoked, baseline lung function, and concurrent conditions.
When does the lung cilia regrow?
Cilia (the hair-like clearers in the airways) begin recovering within 1–3 months of stopping smoking, and cough/mucus typically improves around that window — see the 1-month milestone in the timeline.
How long until lung function fully recovers?
Airway inflammation and ciliary function usually improve within 3–9 months. Structural changes from COPD are not fully reversible, but further decline slows dramatically after quitting. See the full timeline for detail.
I still have a cough after 3 weeks — is that normal?
A temporary 'quit cough' is common for the first 1–3 months as cilia recover. If your cough is productive of blood, includes fever, or worsens after week 4, see your clinician.
Canonical: https://tryblou.com/tools/lung-recovery