Cancer Risk Assessment
Answer a few questions about your lifestyle and family history.
Educational tool — not a medical diagnosis
Medical Disclaimer: This quiz provides general educational guidance based on known risk factors. It cannot replace professional medical evaluation, genetic testing, or personalized risk assessment by your doctor.
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Understanding Cancer Risk Factors
Cancer risk is influenced by a combination of factors — some you can control, and some you cannot. Understanding your personal risk profile helps you make informed decisions about screening, prevention, and lifestyle changes.
Modifiable vs Non-Modifiable Risk Factors
Modifiable factors (things you can change):
- Tobacco: Responsible for about 30% of all cancer deaths. Quitting at any age reduces risk.
- Body weight: Obesity is linked to at least 13 types of cancer, including breast (post-menopausal), colorectal, and kidney.
- Physical activity: Regular exercise reduces risk of colon, breast, and endometrial cancers by 20-30%.
- Diet: Diets high in fruits, vegetables, and fiber are associated with lower cancer risk. Processed and red meat increase colorectal cancer risk.
- Alcohol: Even moderate drinking increases risk of breast, liver, colorectal, and other cancers.
- Sun exposure: UV radiation is the primary cause of skin cancers, including melanoma.
Non-modifiable factors (things you cannot change):
- Age: Cancer risk increases significantly after age 50.
- Family history: Having first-degree relatives with cancer increases your risk for the same type.
- Genetics: Inherited mutations (e.g., BRCA1/2, Lynch syndrome) significantly increase risk for specific cancers.
How Lifestyle Changes Reduce Cancer Risk
The World Health Organization estimates that 30-50% of all cancer cases are preventable through lifestyle changes. Key statistics:
- Quitting smoking reduces lung cancer risk by 50% after 10 years
- Regular exercise reduces colon cancer risk by 24% and breast cancer risk by 12%
- Maintaining a healthy weight could prevent over 100,000 cancer cases per year in the US
- HPV vaccination can prevent up to 90% of HPV-related cancers
Family History and Genetic Risk
While most cancers are not directly inherited, having a family history increases your risk. Consider genetic counseling if:
- Multiple first-degree relatives have been diagnosed with the same or related cancers
- A relative was diagnosed with cancer before age 50
- A relative had multiple different cancers
- There is a known genetic mutation in your family (BRCA, Lynch syndrome, etc.)
A genetic counselor can help assess whether genetic testing is appropriate for you and interpret the results in the context of your family history.