What is the main cause of skin cancer?

The primary cause of skin cancer is exposure to ultraviolet (UV) light. UV radiation can damage the DNA in skin cells, leading to mutations that may result in cancer. This damage occurs through two types of UV radiation: UVA and UVB. UVA rays penetrate deep into the skin and can cause long-term skin damage, while UVB rays are responsible for causing sunburn and also play a significant role in the development of skin cancer.

Protective measures such as using sunscreen, wearing protective clothing, and seeking shade can significantly reduce the risk of UV-related skin damage and, consequently, skin cancer. While factors like genetic predisposition and lifestyle choices, such as diet, may influence overall health and cancer risk, the direct relationship between UV exposure and skin cancer is well-established, highlighting the importance of sun protection in skin cancer prevention.