Family history of colorectal cancer
Overview
Family history of colorectal cancer refers to having one or more blood relatives who have been diagnosed with cancer of the colon or rectum. This genetic predisposition increases an individual's risk of developing colorectal cancer compared to those without a family history of the disease.
Common Causes
Having family members with colorectal cancer can increase your risk due to shared genetic factors that may be passed down through generations. Some families carry inherited gene mutations that make them more susceptible to developing this type of cancer. Additionally, families often share similar lifestyle habits, dietary patterns, and environmental exposures that can contribute to cancer risk over time.
Severity Levels
Mild: One distant relative (like a grandparent or aunt/uncle) diagnosed with colorectal cancer after age 60, or family history is unclear or limited.
Moderate: One first-degree relative (parent, sibling, or child) diagnosed with colorectal cancer after age 50, or multiple distant relatives with the condition.
Severe: Multiple first-degree relatives with colorectal cancer, any relative diagnosed before age 50, or known hereditary cancer syndromes like Lynch syndrome or familial adenomatous polyposis in the family.
Medical Attention
If you have blood relatives who have been diagnosed with colon or rectal cancer, it's important to discuss your family history with your doctor. You should seek medical advice to determine if you need earlier or more frequent screening than the general population. Contact your healthcare provider to create a personalized screening plan based on your specific family history and risk factors.
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