Causes of Skin Cancer: Understanding the Risks Behind the Disease
The causes of skin cancer are linked to a combination of environmental, genetic, and lifestyle factors. One of the most common contributors is prolonged exposure to ultraviolet (UV) radiation from the sun or tanning beds, which damages skin cells over time. However, family history, fair skin, weakened immune systems, and repeated exposure to certain chemicals can also increase risk. Understanding these causes empowers individuals to take preventive steps and make informed decisions to protect their skin health.
Both basal cell cancer and squamous skin cancer are caused by UV rays from the sun or tanning. UV rays can harm the DNA inside your skin cells, causing unusual cell growth.Â
Squamous cell skin cancer can also develop after long-term exposure to chemicals that cause cancer. It can grow within a burn scar or ulcer.
The cause of melanoma is unclear. Similar to basal and squamous cell skin cancers, melanoma can be caused by UV rays. But it can develop in parts of your body that are not exposed to sunlight.
Below are a few of the skin cancer risk factors:
- Â Â Â Â Family history of skin cancer
- Â Â Â Â Severe exposure to UV rays from the sun
- Â Â Â Â Exposed to certain substances like arsenic, radium, or creosote
- Â Â Â Â Vacation in sunny or warm climates
- Â Â Â Â Work outdoors often
- Â Â Â Â History of severe sunburns
- Â Â Â Â Have multiple irregular or large moles
- Â Â Â Â Have a weak immune system

Frequently Asked Questions (FAQs):
Q1. What is the leading cause of skin cancer?
A. The primary cause of skin cancer is prolonged exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds.
Q2. Can skin cancer be hereditary?
A. Yes, a family history of skin cancer can increase your risk, especially if close relatives have had melanoma or other types of skin cancer.
Q3. Are there non-sun-related causes of skin cancer?
A. Yes, other causes include exposure to toxic substances (like arsenic), a weakened immune system, radiation exposure, and certain genetic conditions.
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Author Bio:
Dr. Yashashree Joshi – MBBS, MD (Philippines)
Dr. Yashashree Joshi, MD, is a globally-trained oncologist with a robust academic background and extensive experience in pioneering cancer treatments. Dedicated to patient-centered care, she continually integrates the latest advancements in oncology to provide her patients with innovative and personalized treatment plans.
Content Medically Reviewed By MedicoExperts Editorial & Clinically Review Board