UVkokkupuude

UVkokkupuude refers to the phenomenon of exposure to ultraviolet (UV) radiation. This radiation is a part of the electromagnetic spectrum emitted by the sun and also by artificial sources like tanning beds and some industrial equipment. UV radiation is categorized into three main types based on wavelength: UVA, UVB, and UVC. UVC is largely absorbed by the Earth's ozone layer, while UVA and UVB reach the surface.

Exposure to UV radiation can have both beneficial and harmful effects. Beneficial effects include the synthesis of vitamin D in the skin, which is crucial for bone health and immune function. However, excessive or prolonged UV exposure is associated with a range of negative health consequences. These include sunburn, premature aging of the skin characterized by wrinkles and age spots, and an increased risk of developing skin cancers such as basal cell carcinoma, squamous cell carcinoma, and melanoma. UV radiation can also cause damage to the eyes, leading to conditions like cataracts and photokeratitis.

The intensity of UV radiation varies depending on factors such as time of day, season, latitude, altitude, and cloud cover. Protective measures against excessive UV exposure include wearing sunscreen, protective clothing, hats, and UV-blocking sunglasses. Limiting direct sun exposure during peak UV hours (typically between 10 a.m. and 4 p.m.) is also recommended.