Calculate Your Cancer Risk

Cancer Risk History

Cancer Risk 2025: Know Your Odds, Reduce Them

1 in 2 men, 1 in 3 women will face cancer. But 40% of cases are preventable. This calculator estimates your 10-year risk for lung, breast, and colorectal cancer.

Cancer Risk Factors (2025)

  • Smoking: 85% of lung cancer
  • Obesity: 13 cancer types
  • Alcohol: 5.6% of all cancers
  • Family history: 2–3x risk
  • Age ≥50: 90% of diagnoses

10-Year Cancer Risk by Type

CancerAvg Risk (50yo)High Risk
Lung1.5%20%+ (smokers)
Breast (F)2.5%12% (BRCA+)
Colorectal1.8%6% (no screening)
Prostate (M)2.0%10% (family hx)

Lung Cancer Risk Model

Based on USPSTF + PLCOm2012:

  • Never smoker: <1%
  • Former (quit 15y): 2–5%
  • Current 1 pack/day: 15–20%

Breast Cancer (Gail Model)

  • Age at first period
  • Age at first birth
  • Number of biopsies
  • 1st-degree relatives with breast cancer

Colorectal Cancer Risk

Screening reduces mortality by 60%:

  • Colonoscopy every 10y
  • FIT test yearly
  • Red meat >500g/week = +18% risk

Prevention = Risk Reduction

40% preventable:
• Quit smoking → 50% lung risk drop in 10y
• 30 min exercise/day → 25% lower risk
• BMI <25 → 30% reduction
• 5+ fruits/veg → 20% lower
• HPV vaccine → 90% cervical prevention

Screening Guidelines 2025

  • Lung: 50–80yo, 20 pack-year hx → annual LDCT
  • Breast: 40+ → mammogram every 1–2y
  • Colorectal: 45+ → colonoscopy or FIT
  • Cervical: 25–65 → Pap/HPV every 3–5y
  • Prostate: Discuss PSA at 50

Global Cancer Stats

  • 19.3 million new cases (2020)
  • 10 million deaths
  • Lung: #1 cause of cancer death
  • Breast: #1 in women
  • Survival up 20% since 2000

Genetic Risk

BRCA1/2: 72% lifetime breast cancer risk
Lynch syndrome: 80% colorectal risk

How to Use This Calculator

  1. Enter age, gender, lifestyle
  2. Add smoking, BMI, alcohol
  3. Include family history
  4. Check screening status
  5. Save to track changes

Warning Signs

  • Unexplained weight loss
  • Persistent cough/blood
  • Bowel habit changes
  • Lump in breast/testicle
  • Skin changes

Success Stories

Anna, 52: "Annual mammogram caught DCIS early. Full recovery."

Mike, 60: "Quit smoking at 50. Lung screening clear 10 years later."

Related Tools

FAQs

Accurate? Based on NCI, USPSTF, Gail, PLCO models

Covers all cancers? Focus: lung, breast, colorectal (top 3)

Should I worry? Use as prevention guide, not diagnosis

Conclusion

Cancer isn’t fate. Know your risk. Act early. One screening saves thousands in treatment — and a lifetime of health.

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