The Health Effects of UV Radiation

Ultraviolet light is a type of electromagnetic radiation, light, that we receive from the sun. It has a shorter wavelength than visible light, so it is invisible to the naked eye. Its short wavelength also means it is high in energy and dangerous to living organisms. although, UVC, the form of UV light that is highest in energy, is mostly blocked by the atmosphere, UVB is only partially blocked, and UVA isn't blocked at all. Besides sunlight, you can also be exposed to UVA through tanning facilities.

Negative Effects

UV overexposure will result in a long list of health problems. The area most damaged by UV radiation is your skin. Beyond sunburns overexposure can cause wrinkles and premature aging, and if left unchecked ultraviolet radiation will eventually lead to skin cancer. Three types of which, in order of treatability, are basal cell, squamous cell, and malignant melanoma. Besides skin damage UV also damages your immune system and DNA. It also leads to eye damage in the form of blindness, cataracts, and malacular degeneration.

Positive Effects

Despite its many harmful effects, UV actually provides a couple a few health benefits. Ultraviolet light can in small amounts help you produce vitamin D. You only need fifteen minutes of UV a day to produce all the vitamin D you need. You need vitamin D to help your body absorb calcium. The other benefit of UV exposure is it helps your skin produce melanin. Melanin is a dark pigment that goes someway to shielding you from further UV exposure.