Final answer:
A major health problem associated with ultraviolet light is the increased risk of skin cancer.
Step-by-step explanation:
A major health problem associated with ultraviolet (UV) light is the increased risk of skin cancer. UV radiation, particularly UV-B, is known to cause damage to the DNA in skin cells and can lead to the development of skin cancer. In fact, about 90% of all skin cancer cases are caused by exposure to UV radiation. The World Health Organization has classified UV radiation as a Group 1 carcinogen, meaning it is known with virtual certainty to cause cancer.