Exposure of skin to ultraviolet radiation from sunlight presents both positive and negative health effects. On the positive side, UV exposure enables the synthesis of vitamin D 3, which is essential for bone health [1] and potentially plays a role in inhibiting certain cancers.

2022年11月16日 · Ultraviolet (UV) radiation from the sun can cause wrinkles, premature aging and skin cancer. There are steps you can take to prevent sun damage from UV radiation.

2025年2月4日 · Ozone layer depletion decreases our atmosphere’s natural protection from the sun’s harmful ultraviolet (UV) radiation. This Web page provides an overview of the major health problems linked to overexposure to UV radiation.

Studies are needed to better understand beneficial effects of exposure to UV radiation: Exposing the skin and eyes to the sun is likely to have benefits beyond those mediated by production of vitamin D.

2024年6月17日 · The sun sends energy to Earth in a few different ways: visible light that you can see, infrared radiation that you feel as heat, and rays of UV radiation that you can’t see or feel. Fortunately, the Earth’s atmosphere protects us from most UV radiation.

2024年7月1日 · You can work and play outside without raising your skin cancer risk by protecting your skin from the sun. Most skin cancers are caused by too much exposure to ultraviolet (UV) light. UV rays are an invisible kind of radiation that comes from …

2024年2月20日 · Ultraviolet (UV) radiation is a form of non-ionizing radiation that is emitted by both natural and artificial sources. There are both benefits and risks to UV radiation. You should always protect yourself from over-exposure to reduce your risk of …

2025年1月24日 · Learn more about possible health effects from overexposure to UV radiation, including skin cancer, premature aging and skin damage, eye damage such as cataracts, and immune system suppression. Learn about why it's important to be sun safe and see tips on how to stay safe while outdoors in the sun.

2024年7月16日 · UV-A and UV-B can therefore trigger different biological and health effects. UV-A penetrates deep into the skin and can reach the dermis and subcutis, where connective tissue and blood vessels are affected, resulting in gradual loss of skin elasticity and premature ageing.

2023年1月19日 · Sunlight has both positive and negative effects on the human body. For example, it is well known that sun exposure can cause burns to the skin and increase the risk of cancer over the long...