The short answer
UV radiation is invisible energy from the sun and from tanning beds. The CDC says too much UV exposure from the sun or tanning beds causes most skin cancers, so limiting UV exposure is the key to lowering your risk.
The CDC says too much UV exposure from the sun or tanning beds causes most skin cancers.
The sun and tanning beds are both sources of harmful UV.
Sunburn is a sign of UV damage, and previous sunburns and indoor tanning raise skin cancer risk.
Anyone can get skin cancer, including people with darker skin.
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The whole article, with every detail and caution.
The simple version
This page explains what UV radiation is and how it relates to skin cancer. It is for anyone who spends time outdoors or has thought about tanning.
UV radiation is invisible energy that comes from the sun. Tanning beds and sun lamps give off UV too. You cannot see or feel UV the way you feel heat.
The CDC says too much exposure to UV rays from the sun or tanning beds causes most skin cancers. Over time, cumulative UV damage can lead to sunburn, changes in skin texture, premature aging, and potentially cancer.
Sunburn and risk
A sunburn is a sign that UV has injured your skin. The CDC lists previous sunburns and indoor tanning as risk factors for skin cancer. Other risk factors it lists include lighter natural skin color, skin that burns or freckles easily, blue or green eyes, blond or red hair, many moles, a family or personal history of skin cancer, and older age.
Tanning beds are a UV source too
Tanning beds and sun lamps give off UV radiation. The National Cancer Institute advises avoiding tanning beds and other sources of UV radiation.
Everyone can get skin cancer
Skin cancer is more common in people with lighter skin. But the CDC and the National Cancer Institute both say people of all skin tones can develop skin cancer, including people with dark skin.
Everyday habits
The CDC says reducing overexposure to UV rays can help lower your chances of getting skin cancer. Sun protection such as shade, clothing, hats, sunglasses, and sunscreen is described by NCI and the CDC. Because UV can go through clouds and is reflected by sand, water, snow, ice, and pavement, protection matters even on days that do not feel especially sunny.
Sources
Common questions
How does UV cause skin cancer?
The CDC says too much exposure to UV rays from the sun or tanning beds causes most skin cancers. Cumulative UV exposure can lead to sunburn, skin texture changes, premature aging, and potentially cancer.
Are tanning beds safer than the sun?
No. The CDC lists tanning beds as a source of UV exposure that causes most skin cancers, and the National Cancer Institute advises avoiding tanning beds.
Does a sunburn matter if it fades?
Yes. The CDC lists previous sunburns as a skin cancer risk factor.
Can I get UV exposure without feeling hot?
Yes. UV is not the same as heat. The National Cancer Institute says UV rays can go through light clothing, windshields, windows, and clouds, and are reflected by sand, water, snow, ice, and pavement.
Can people with darker skin get skin cancer?
Yes. The CDC and the National Cancer Institute both say anyone can develop skin cancer, including people with dark skin. Skin cancer is more common in people with lighter skin that burns or freckles easily.
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Plain-language explanation of the published sources cited on this page. AI-assisted, source-checked, not clinician-reviewed.
Last updated: 2026-10-16Next planned review: 2027-07-04
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How this page was created
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes, and this is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Source checked — This page was written with AI assistance and then compared with the sources listed on it, looking for statements those sources do not back up. That check is not a sentence-by-sentence record and can miss errors. It is not a medical review, and it does not confirm the page is complete or right for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
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