It is generally accepted that ultraviolet light radiation (UVR) from sunlight is a major risk factor for melanoma skin cancer development.
Currently, it is thought that carcinogenic, inflammatory, and immunosuppressive properties of UVR all contribute to initiation, progression, and metastasis of primary melanoma.
How does sunlight cause melanoma?
Too much UV radiation from the sun or sunbeds can damage the genetic material (the DNA) in your skin cells. If enough DNA damage builds up over time, it can cause cells to start growing out of control, which can lead to skin cancer. Your body has ways of repairing most of the damage.
What are the causes of melanoma?
It’s likely that a combination of factors, including environmental and genetic factors, causes melanoma. Still, doctors believe exposure to ultraviolet (UV) radiation from the sun and from tanning lamps and beds is the leading cause of melanoma.
Does Sun really cause skin cancer?
The sun’s rays, called ultraviolet A and ultraviolet B rays (UVA and UVB rays), damage your skin. This leads to early wrinkles, skin cancer and other skin problems. Over time, being in the sun often – even if you don’t burn – can lead to skin cancer.
Why does prolonged exposure to UV light from the sun or tanning beds increase the risk for getting skin cancer?
Research indicates that UV light from the sun and tanning beds can both cause melanoma and increase the risk of a benign mole progressing to melanoma.