Ultraviolet Light

Ultraviolet light is light that mostly emits from the sun. This form of light can be very dangerous to humans, especially the eyes and skin. It is known that ultraviolet light can cause serious skin cancer that in many cases can be fatal. There is scientific evidence that this form of light actually has concentrations of radiation emitting from it which can alter DNA in humans and even animals. There are some positive things about ultraviolet light, however. The light has high concentrations of vitamin D, which is something that most people do not get enough of in their daily diets or lifestyles. Vitamin D has been known to help with depression and encourage bone mass. A small amount of exposure to the sun can help people get their needed amounts of vitamin D. Because of the dangers of ultraviolet light, there is now something called the UV index, which serves as an indicator of the intensity of the sun on each day.

While the threat of skin cancer caused by harmful rays is a real threat, there are measures that people can take to protect themselves. The most obvious and widely used method is sunscreen. It is recommended that people use a minimum of 15 SPF while out in the sun. There are many sunscreens that can go as high as 60 or more, so use whatever you feel is necessary, and be sure to cover the face, arms, back, and legs thoroughly before planning on being in the sun for an extended period of time. Another safeguard is a wide-brimmed hat. Hats can shade the face and eyes, and protect them from harmful UV rays. Of course, good UV blocking sunglasses are always a plus as well. The eyes are very sensitive to ultraviolet light, so be sure to protect them with good, quality sunglasses.