UV rays from the sun can burn eyes, hair, and skin, but they also help produce vitamin D and treat psoriasis. However, prolonged exposure can cause sunburn and skin cancer. Protection with sunglasses, hats, and sunscreen is important to combat UV rays.
Ultraviolet (UV) rays are invisible rays that are part of the energy that comes from the sun. UV rays can burn the eyes, hair and skin if these parts of the body are not adequately protected or if they are subjected to excessive exposure to the sun. However, they are very useful in our ecosystem.
UV rays help our body produce vitamin D, which strengthens bones and teeth and helps our body build immunity against diseases such as rickets and colon cancer. They are also used to treat psoriasis; the rays slow the growth of skin cells, preventing the appearance of the itchy patches that psoriasis is known for. They also have various commercial uses, including sterilization and disinfection. Some animals, like bees, can see in the ultraviolet, which helps them collect pollen from flowers.
For all their positive uses, UV rays remain very harmful to anyone who spends a lot of time in the sun without adequate protection. The most common effect of exposure to them is sunburn. Sunburn causes blood to rush to the affected area as the body tries to cool the burn, and the damaged skin eventually peels off. In addition to the burning pain on the skin, sunburn can eventually cause skin cancer.
Skin cancer is often caused by prolonged exposure to ultraviolet light, but it can also occur in the absence of sunburn. Dark-skinned people are just as sensitive as light-skinned people to damage caused by UV rays. Eye damage caused by these rays initially manifests itself as pain or temporary blindness and blurred vision, but cataracts can develop over time. The UV index measures the intensity of UV radiation and gives people an idea of how long they can be in the sun before damage is possible. An index of 1-3 means the chance of UV damage is low, while an index of 8-10 means the chance is high.
The best way to combat UV rays is with body protection. Always wear protective sunglasses and a hat to protect your eyes. A hat will also protect your hair from UV damage, as well as the skin on your face and neck.
While the best protection for your skin is long, loose clothing, this isn’t always practical, so a protective sunscreen is the best option. There are many types of sunscreens, but they all have a number that indicates how protective they are. The higher the number, the more protection it provides. Always use sunscreen, even if you will only be in the sun for a few minutes. Be smart, cover up, use sunscreen and enjoy the sun!
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