Lung Cancer Risk Calculator
Estimate lung cancer risk based on smoking history and personal factors using validated research
Critical Medical Disclaimer
This calculator is for educational purposes only and should NOT be used for medical diagnosis or treatment decisions.
- Risk calculations are based on population averages and may not reflect individual risk
- Results cannot predict individual outcomes - high-risk individuals may never develop cancer
- Many factors (genetics, air pollution, occupational exposure) are not included
- Always consult an oncologist or physician for proper cancer screening guidance
- This tool cannot substitute for professional medical examination or advice
Personal Information
Smoking History
Lung Cancer Risk Assessment
Enter your information above to calculate lung cancer risk
All fields are required for accurate risk assessment
Example Risk Assessment
High Risk Example
Profile: 65-year-old male, BMI 28, smoked 30 cigarettes/day for 40 years
Pack-years: (30÷20) × 40 = 60 pack-years
Quit: 2 years ago, daily cough, 2 hours smoke exposure
Risk level: Would likely exceed screening thresholds
Recommendation: Discuss CT screening with oncologist
Lower Risk Example
Profile: 35-year-old female, BMI 22, smoked 10 cigarettes/day for 10 years
Pack-years: (10÷20) × 10 = 5 pack-years
Quit: 5 years ago, no daily cough, minimal smoke exposure
Risk level: Age factor significantly reduces calculated risk
Recommendation: Continue regular health monitoring
Risk Factors Included
Age
Risk increases with age
Sex
Males have higher baseline risk
Pack-Years
Total lifetime smoking exposure
Smoking Intensity
Cigarettes per day
Quit Duration
Years since cessation
BMI
Body mass index
Daily Cough
Respiratory symptoms
Screening Thresholds
High Risk
6-year risk ≥ 0.64% OR 16-year risk ≥ 1.75%
Consider Screening
Discuss CT screening with your doctor if thresholds exceeded
Important Notes
Based on Norwegian population research (65,000+ participants)
Individual outcomes vary significantly from population averages
Age is major factor - younger people typically have lower risks
Genetics and environmental factors not included
Understanding Lung Cancer Risk
Research Foundation
This calculator is based on the validated HUNT study by Markaki et al. (2018), which analyzed over 65,000 participants in Norway. The research identified seven key risk factors that significantly predict lung cancer development in smokers of all ages and exposure types.
Key Findings
- •Model validated on additional 45,000-person dataset
- •Effective for screening high-risk individuals
- •Age is the most significant risk factor
- •Pack-years provide cumulative exposure measure
Risk Interpretation
Remember: This is a population-based estimate. Individual risk depends on many factors not included in this model.
Clinical Applications
Screening Decisions
Helps identify individuals who may benefit from low-dose CT screening programs.
Risk Counseling
Provides quantitative risk estimates for patient counseling and shared decision-making.
Monitoring
Tracks risk changes over time, especially after smoking cessation.