Years smoked
Smoking for 30 years, or 40, or 50
Doubling the years does not double the damage, and that is the most useful thing on this page.
Written by Lee H. Last reviewed 2 September 2026.
The table
Every row below is the same person: a 60-year-old man who smoked 20 a day and has not stopped. The only thing that changes is how long he did it. The figures come from this site's model, described in full on the methodology page.
| Years smoked | Estimated cost | Recoverable by stopping now |
|---|---|---|
| 10 | 2 years 4 months | 11 months |
| 20 | 4 years 9 months | 1 year 10 months |
| 30 | 7 years 1 month | 2 years 9 months |
| 40 | 9 years 3 months | 3 years 7 months |
| 50 | 10 years 5 months | 4 years 1 month |
Why the curve flattens
Read the first column downward and the increments shrink. The first ten years cost about two years and four months. The tenth decade, going from 40 years to 50, costs about one year and two months. The first decade of smoking is the most expensive one you will ever smoke.
There are two reasons, and neither is comforting so much as clarifying.
The first is arithmetic. A person only has so much life expectancy to lose. A model that subtracted a flat amount per cigarette forever would eventually claim a lifetime smoker dies before he was born, which is why this site's model caps the loss. That cap is the whole reason the 20 minutes per cigarette figure cannot simply be run to infinity.
The second is survivorship, and it is the honest half. Somebody who has smoked for fifty years and is asking this question has already outlived a good number of people who smoked the same amount. The average cost of fifty years of smoking is drawn across everyone who started, including those who are not here to be counted. If you are reading this at 70, having smoked since you were 20, you are already on the fortunate side of that average.
What it means if you have smoked a long time
The flattening cuts both ways. It means the damage from another year is smaller than the damage from your first, which is the argument people reach for when they decide it is too late to bother. It is a real effect and it is not the whole picture.
Look at the third column. After fifty years, there are still about four years of life expectancy sitting there to be recovered. That is not a rounding error, and it does not require anything except stopping. The recovery is also front loaded: most of what comes back arrives in the first few years after the last cigarette.
The is it too late page works the same question from the other direction, by age at quitting, and lands in the same place: less comes back later, and less is not none.
What the table cannot tell you
Duration is only one of the three things that matter, and it is not the biggest. How much you smoked matters at least as much: fifty years at five a day and fifty years at forty a day are not the same habit and the model does not treat them as one. Your age now matters too, because it decides how much life expectancy is left for any of this to be subtracted from.
And none of it is a prediction about you. It is an average, and averages describe populations. The calculator takes all three inputs together, which is the closest this site gets to a number that is yours.
This page reports a motivational estimate built from population averages. It is not a prediction about any one person, it does not diagnose, treat or prevent any condition, and it is not medical advice. No guarantee is made or offered about the accuracy of any figure or calculation on this site. Talk to a doctor or a quitline about stopping smoking. In the US, that is 1-800-QUIT-NOW.
Keep reading
Where to go next
Is it too late to quit?
The same question by age at quitting, with the published bands behind it.
How long do smokers live?
A worked table by amount smoked, from 5 a day to 30.
Already quit?
Year by year, how much has come back so far and how much is still on its way.
Quit smoking calculator
Your age, your years, your count, in one answer.
Sources
- Jha, P. et al., "21st-Century Hazards of Smoking and Benefits of Cessation in the United States", New England Journal of Medicine, 2013.
- Jackson, S. E., Jarvis, M. J. and West, R., "The price of a cigarette: 20 minutes of life?", Addiction, 2025.
See the full model on the methodology page, or go back to all guides.