UV exposure refers to the amount of exposure a person receives from ultraviolet (UV) radiation, which is a type of electromagnetic radiation that comes from the sun. UV exposure can have both positive and negative effects on health. Positive effects of UV exposure include the production of vitamin D in the skin, which is important for calcium absorption and bone health. UV exposure can also help improve mood and treat certain skin conditions like psoriasis. However, excessive UV exposure can have negative effects on health, including sunburn, premature aging of the skin, and an increased risk of skin cancer. The intensity of UV exposure varies depending on factors such as the time of day, geographic location, and skin type. Research on UV exposure aims to better understand its effects on health, develop strategies for sun protection, and educate the public on the dangers of excessive UV exposure. This research can help individuals make informed decisions about sun exposure and protect their skin from the harmful effects of UV radiation.