what causes skin cancer
I am really concerned about my skin health lately. A few months ago, I noticed some odd moles popping up and they kinda look different each week. My friend mentioned that they could be linked to bigger issues like skin cancer, but I don’t know what causes skin cancer! Like, I used to spend a lot of time in the sun without sunscreen back when I was younger, and I regret that now. I've also done some research, and saw that genetics can play a role too, which freaks me out because my aunt had skin cancer. I've tried avoiding the sun and wearig sunblock, but I wonder if staring at screens too much could be a factor too? I mean, like, we all hear about how much blue light effects us, what if it messes with our skin? My doctor said to keep an eye on my moles but didn't really dive into what causes skin cancer besides sun exposure. Are there other risk factors I should be aware of? Or lifestyle choices that might be triggering it that I haven't thought of? I'm just feeling so lost about this. Could really use some insight on what causes skin cancer and anything I might be doing that puts me at risk!
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Doctors' responses
Certainly, skin cancer is a concern for many, and understanding its causes is key to both prevention and early recognition. Sun exposure, specifically ultraviolet (UV) radiation, is indeed the major cause of skin cancer. This includes not only direct sunlight but also the use of tanning beds. Genetics do also play a role, as you mentioned, particularly if close relatives have had skin cancer. Your history of sun exposure without protection may increase your risk. Blue light from screens isn’t currently known to contribute to skin cancer in the way UV does, so it’s less of a worry in that regard. However, there are other factors beyond sun exposure to consider. People with fair skin, light hair, and light eyes are at a higher risk. A history of blistering sunburns, especially early in life, also increases risk. A suppressed immune system, either from medical conditions or medications, such as those taken for organ transplants, may heighten susceptibility. Smoking has also been associated with an increased risk for some types of skin cancer, notably squamous cell carcinoma. Chronic, non-healing wounds or scars can be sites for certain skin cancers too, although this is rarer. As a preventive step, continue using broad-spectrum sunscreen, wear protective clothing, and avoid peak sun hours. Keep monitoring any changes in your moles, following the ABCDEs of melanoma: Asymmetry, Border irregularity, Color changes, Diameter over 6mm, and Evolving over time. If something feels off or you’re concerned, getting a dermatological evaluation would be beneficial. Early detection significantly improves treatment outcomes. Also ensure regular check-ups, because professional screening can catch changes you might miss. This proactive approach aligns well with modern public health advice focusing on prevention and early action.
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