What can excessive exposure to UV light lead to?

Excessive exposure to UV light significantly increases the risk of developing various types of skin cancers. Ultraviolet radiation can damage the DNA in skin cells, leading to mutations. Over time, these mutations can accumulate and disrupt normal cell function, which can result in uncontrolled cell growth—characteristic of cancer. The most common forms of skin cancer associated with UV exposure include basal cell carcinoma, squamous cell carcinoma, and melanoma, the latter being the most severe type.

While enhanced pigment production, often a natural response to UV exposure, can occur as the skin attempts to protect itself from damage, it doesn't inherently lead to skin cancer. Similarly, skin hydration and elasticity are not typically improved by UV exposure; in fact, prolonged exposure can have the opposite effect, leading to premature aging and dryness of the skin. Therefore, the connection between excessive UV light and an increased risk of skin cancers is well-established and is why it is crucial to practice sun safety through protective measures like sunscreen and clothing.