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Real members of MyMelanomaTeam have posted questions and answers that support our community guidelines, and should not be taken as medical advice. Looking for the latest medically reviewed content by doctors and experts? Visit our resource section.
July 10, 2025
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Yes, having a weakened immune system can increase your risk of developing melanoma. Your immune system normally works to destroy cancer cells before they can take hold in your body. When the immune system is compromised, it may be less effective at fighting off cancer cells. Having a family history of melanoma also Show Full Answer

Yes, having a weakened immune system can increase your risk of developing melanoma. Your immune system normally works to destroy cancer cells before they can take hold in your body. When the immune system is compromised, it may be less effective at fighting off cancer cells. Having a family history of melanoma also significantly increases your risk - about two to three times higher than those without family history. If your baseline risk was 5%, having family history could increase it to 10-15%. This increased risk may be due to a combination of:

- Shared genetic factors
- Similar skin characteristics
- Common lifestyle factors like sun exposure patterns Some people have familial melanoma caused by inherited gene mutations, particularly in tumor suppressor genes. These genes normally help control cell growth, but when mutated, cells can grow uncontrollably. It's important to work closely with your healthcare team for appropriate monitoring given your combined risk factors.

July 10, 2025

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