Quitting Smoking
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What it is
Stopping smoking permanently, by whatever method works – nicotine replacement (patches, gum, lozenges), prescription tablets like varenicline (Champix/Chantix), going cold turkey, or a combination. Unlike cutting down, quitting means zero cigarettes from your quit date onward. Smoking is the single biggest avoidable cause of early death in high-income countries. It is responsible for about half of all cancer deaths, most cases of severe lung disease, and a large share of heart disease – which makes quitting one of the highest-payoff things any current smoker can do, regardless of age.
Sources and key statistics
- Complete cessation of tobacco using any combination of nicotine replacement (patches, gum, lozenges, inhalers), prescription medication (varenicline or bupropion), behavioural support, and trigger management. The goal is permanent zero-cigarette abstinence.
- Varenicline is the most effective single medication. Cochrane network meta-analysis of 150,000+ smokers shows it outperforms both nicotine replacement and placebo, roughly tripling the odds of being smoke-free at twelve months.
- NEJM Evidence (2023) found quitting before age 40 recovers around 12 years of life expectancy; quitting at 40–49 recovers around 6 years; even quitting at 50–59 adds around 2.5 years.
- Real-world quit rates are low. Only 3–5% of cold-turkey attempts produce sustained six-month abstinence; medication raises twelve-month success to around 20%. So the benefits are huge if it works, but most attempts fail.
- Unlike most health interventions, quitting smoking improves multiple body systems at once – heart, lungs, cancer risk, metabolism, and finances – with the risk reduction starting within hours of the last cigarette.
Cost
- Upfront cost: $0
- Ongoing cost: $80/month
- Upfront time: 2 hours
- Ongoing time: 1 hour/week
Personalise these costs
Override the population estimates with your own. Saved to your profile and used to recalculate Time and Money EROIs.
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How to do it
- Set a specific quit date within the next two weeks and clear all the cigarettes, lighters, and ashtrays from your home and car beforehand. People who prepare in advance are much more likely to succeed.
- Pick a stop-smoking aid before your quit date. Varenicline (Champix/Chantix) has the strongest evidence and roughly doubles your odds of quitting compared with nicotine replacement alone. Nicotine replacement (patches, gum, lozenges, inhalers) is available without prescription – combining a long-acting patch with a faster-acting gum or lozenge works better than either alone.
- Identify your three highest-risk triggers (typically stress, alcohol, or specific social situations) and plan a specific replacement for each: a five-minute walk, a piece of gum, a quick call to someone supportive.
- Use a free stop-smoking service: a national quitline, an NHS-style cessation app, or your country’s equivalent. Combining this kind of behavioural support with medication roughly doubles your chances compared with medication alone.
What success looks like
- A full year smoke-free from your quit date, with the worst of the cravings settling within four to eight weeks.
- Within three to six months your resting heart rate, blood pressure, and exercise capacity have measurably improved. Within a year, your excess heart-disease risk is roughly halved compared with a continuing smoker.
- The money you used to spend on cigarettes has quietly redirected itself to savings or other spending. You feel the financial benefit, you no longer have to calculate it.
Common pitfalls
- Treating one slip-up cigarette as evidence the whole attempt has failed, and giving up. Most successful quitters needed several attempts, and getting straight back to zero after a slip is strongly linked to long-term success.
- Stopping the medication too early. Both varenicline and nicotine replacement work best when used for the full recommended course (twelve weeks for varenicline, eight to twelve weeks for nicotine replacement). Stopping early sharply increases the chance of relapse.
- Underestimating alcohol as a relapse trigger. Drinking is the most commonly reported cause of relapse in the first year. Cutting back or pausing drinking during the early quit period meaningfully improves your odds at the twelve-month mark.
Prerequisites
- Currently smoking tobacco – this intervention is not applicable to non-smokers or those who have already quit
- Access to a healthcare provider or pharmacy if pursuing pharmacotherapy (varenicline requires a prescription in most countries; NRT is over-the-counter)
- Willingness to set a firm quit date – cessation without a specific quit date has significantly lower success rates than planned cessation
Expected effects across life areas
| Life area | Value | PBS | ISR | UAR | Confidence | Baseline (population percentile) | EBS |
|---|---|---|---|---|---|---|---|
| Fitness | Health & longevity | 9 | 88% | 10% | high | 35th | … |
| Fitness | Performance | 7 | 80% | 10% | high | 35th | … |
| Health Management | Long-term health | 9 | 88% | 10% | high | 35th | … |
| Health Management | Present vitality | 7 | 75% | 10% | medium | 35th | … |
| Health Management | Personal control | 7 | 80% | 10% | medium | 35th | … |
| Saving | Security | 8 | 95% | 10% | medium | 35th | … |
| Saving | Growth | 7 | 92% | 10% | medium | 35th | … |
| Nutrition | Pleasure & connection | 6 | 85% | 10% | medium | 35th | … |
Detailed Scoring
Scoring uses a logarithmic scale from 0 to 10, where each unit increase represents roughly double the impact. Learn more about ROI calculations.
Fitness – Health & longevity
Anchor: Additional healthy lifespan
Logarithmic Scale:
- Score 10: 15+ years additional healthy lifespan
- Score 8: 3-4 years additional healthy lifespan
- Score 6: 1 year additional healthy lifespan
- Score 4: 3-6 months additional healthy lifespan
- Score 2: 1-2 months additional healthy lifespan
- Score -2: 1-2 months of healthy lifespan lost
- Score -4: 3-6 months of healthy lifespan lost
- Score -6: 1 year of healthy lifespan lost
- Score -8: 3-4 years of healthy lifespan lost
- Score -10: 15+ years of healthy lifespan lost
Potential Benefit Score (PBS):
9
Intervention Success Rate (ISR):
88%
User Adherence Rate (UAR):
10%
Expected Benefit Score (EBS):
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Fitness – Performance
Anchor: Fitness test percentile ranking among age-matched population
Logarithmic Scale:
- Score 10: 99th+ fitness test percentile
- Score 8: 25th fitness test percentile
- Score 6: 6th fitness test percentile
- Score 4: 2nd fitness test percentile
- Score 2: Below 1st fitness test percentile
- Score -2: Below 1st percentile drop in fitness test ranking
- Score -4: ~2 percentile point drop in fitness test ranking
- Score -6: ~6 percentile point drop in fitness test ranking
- Score -8: ~25 percentile point drop in fitness test ranking
- Score -10: Near-total loss of fitness test ranking
Potential Benefit Score (PBS):
7
Intervention Success Rate (ISR):
80%
User Adherence Rate (UAR):
10%
Expected Benefit Score (EBS):
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Health Management – Long-term health
Anchor: Change in comprehensiveness of preventive care strategy
Logarithmic Scale:
- Score 10: Transformative gain in long-term preventive health strategy
- Score 8: Major gain in long-term preventive health strategy
- Score 6: Meaningful gain in long-term preventive health strategy
- Score 4: Modest gain in long-term preventive health strategy
- Score 2: Slight, barely noticeable gain in long-term preventive health strategy
- Score -2: Slight, barely noticeable reduction in long-term preventive health strategy
- Score -4: Modest reduction in long-term preventive health strategy
- Score -6: Meaningful reduction in long-term preventive health strategy
- Score -8: Major reduction in long-term preventive health strategy
- Score -10: Severe damage to long-term preventive health strategy
Potential Benefit Score (PBS):
9
Intervention Success Rate (ISR):
88%
User Adherence Rate (UAR):
10%
Expected Benefit Score (EBS):
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Health Management – Present vitality
Anchor: Hours per day of sustained high energy and cognitive function
Logarithmic Scale:
- Score 10: 14 hours of sustained high energy and cognitive function through personalised interventions
- Score 8: 10-12 hours of consistently high energy through optimised sleep, nutrition, and exercise
- Score 6: 8-9 hours of generally good energy with systems for early health issue detection
- Score 4: 6-7 hours of adequate energy; health issues sometimes affect daily function
- Score 2: Fewer than 4 hours of adequate energy; persistent fatigue or health complaints
- Score -2: ~0.2 high-energy hours per day lost
- Score -4: ~0.9 high-energy hours per day lost
- Score -6: ~3.5 high-energy hours per day lost
- Score -8: ~14 high-energy hours per day lost
- Score -10: All high-energy hours lost — persistent severe fatigue
Potential Benefit Score (PBS):
7
Intervention Success Rate (ISR):
75%
User Adherence Rate (UAR):
10%
Expected Benefit Score (EBS):
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Health Management – Personal control
Anchor: Change in knowledge, skill, and confidence making informed health decisions
Logarithmic Scale:
- Score 10: Transformative gain in personal control over health decisions
- Score 8: Major gain in personal control over health decisions
- Score 6: Meaningful gain in personal control over health decisions
- Score 4: Modest gain in personal control over health decisions
- Score 2: Slight, barely noticeable gain in personal control over health decisions
- Score -2: Slight, barely noticeable reduction in personal control over health decisions
- Score -4: Modest reduction in personal control over health decisions
- Score -6: Meaningful reduction in personal control over health decisions
- Score -8: Major reduction in personal control over health decisions
- Score -10: Severe damage to personal control over health decisions
Potential Benefit Score (PBS):
7
Intervention Success Rate (ISR):
80%
User Adherence Rate (UAR):
10%
Expected Benefit Score (EBS):
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Saving – Security
Anchor: Months of expenses covered by emergency fund reserves
Logarithmic Scale:
- Score 10: 12+ months of emergency fund
- Score 8: 3 months of emergency fund
- Score 6: 3 weeks of emergency fund
- Score 4: 5-6 days of emergency fund
- Score 2: 1-2 days of emergency fund
- Score -2: 1-2 days of emergency fund depleted
- Score -4: 5-6 days of emergency fund depleted
- Score -6: 3 weeks of emergency fund depleted
- Score -8: 3 months of emergency fund depleted
- Score -10: 12+ months of emergency fund depleted
Potential Benefit Score (PBS):
8
Intervention Success Rate (ISR):
95%
User Adherence Rate (UAR):
10%
Expected Benefit Score (EBS):
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Saving – Growth
Anchor: Percentage of gross income saved and invested for long-term wealth accumulation
Logarithmic Scale:
- Score 10: 50%+ of gross income saved
- Score 8: 12-13% of gross income saved
- Score 6: 3% of gross income saved
- Score 4: 0.8% of gross income saved
- Score 2: 0.2% of gross income saved
- Score -2: 0.2% of gross income net dissaving
- Score -4: 0.8% of gross income net dissaving
- Score -6: 3% of gross income net dissaving
- Score -8: 12-13% of gross income net dissaving
- Score -10: 50%+ of gross income net dissaving
Potential Benefit Score (PBS):
7
Intervention Success Rate (ISR):
92%
User Adherence Rate (UAR):
10%
Expected Benefit Score (EBS):
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Nutrition – Pleasure & connection
Anchor: Change in how much food contributes to cultural expression and social bonding
Logarithmic Scale:
- Score 10: Transformative gain in pleasure and connection from food
- Score 8: Major gain in pleasure and connection from food
- Score 6: Meaningful gain in pleasure and connection from food
- Score 4: Modest gain in pleasure and connection from food
- Score 2: Slight, barely noticeable gain in pleasure and connection from food
- Score -2: Slight, barely noticeable reduction in pleasure and connection from food
- Score -4: Modest reduction in pleasure and connection from food
- Score -6: Meaningful reduction in pleasure and connection from food
- Score -8: Major reduction in pleasure and connection from food
- Score -10: Severe damage to pleasure and connection from food
Potential Benefit Score (PBS):
6
Intervention Success Rate (ISR):
85%
User Adherence Rate (UAR):
10%
Expected Benefit Score (EBS):
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