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Uv Light—positives And Negatives
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The thought of going out into the heat of the sun on a humid summer day may not sound very appealing to you, especially when you think of UV rays. After all, who would want to expose themselves to the harmful UV light, right? Well, you do have a point. After all, medical experts have always warned us about the dangers of UV.
But what does real science say? Is UV or Ultra Violet light altogether harmful?
It might surprise you to know that UV light also has its positive side along with the negatives. Let us learn more about the positives and the negatives of UV light from the paragraphs below.
The Positive Side of UV
1. Stimulates Vitamin D – Who would have thought that UV is what triggers our bodies to produce Vitamin D? We are sure that you did not see this benefit coming. So what is the role of Vitamin D in our body? Well, Vitamin D helps strengthen our bones and muscles as well as our immune system. The presence of Vitamin D in our body also minimizes the risk of developing colon cancer.
2. Can treat several skin conditions – Now, we want you to do away with the thought that UV rays are altogether harmful and can only cause damage to your skin. Recent research shows that a certain amount of UV light is beneficial in treating certain skin diseases such as psoriasis. Psoriasis refers to the skin condition where the skin sheds its layer of cells too quickly, manifesting itself in itchy and scaly patches. Exposure to UV light helps to slow down the abnormal growth of skin cells and alleviates the symptoms.
3. Brightens mood – Yes, science has finally proven the cliché, “walking on sunshine”! The sun’s UV light is the reason behind the good mood we feel when the sun shines. How so? Scientists have found that sunlight triggers a certain portion of our brain, the pineal gland, to produce tryptamines—chemicals that brighten our mood.
4. Helps animals see – UV light is especially helpful for animals such as bees, birds, and reptiles) to see and find their way to food. For example, scientists have discovered that UV light reveals unique markings in some flowers, directing birds and bees to their nectar.
5. Aids the navigation of some insects – Some insects use the UV light that celestial bodies emit to guide their flight, explaining why they are attracted even to artificial light.
6. Useful for sterilization and disinfection – Hanging your clothes out under the sun is good, not only for drying them fast but also for disinfecting them from harmful microorganisms. UV light works against microorganisms by destroying the DNA they contain to keep them from reproducing.
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The Negative Side of UV
1. It is the main cause of skin cancers – Unfortunately for UV light, scientists have consistent evidence that it can cause skin cancer, which is why experts warn against prolonged sunlight exposure. If you have to be out in the sun for a long time, make sure to wear sunscreen or protect your skin with a layer of clothing.
2. Speeds up skin aging – Exposure to UV light causes skin damage as it destroys both your collagen and your epidermis. Taking skin supplements such as phytoceramide supplements can, however, help supply your skin with the antioxidants and nutrients it needs to fight the oxidative damage that UV light causes.
3. Can cause damage to the eyes – Whenever you go outside, do not forget to put on your sunglasses! UV light can cause damage to your eye tissues and increase your risk of developing cataracts, pingueculae, and pterygium.
4. May cause damage to your immune system – Yes, a measure of sunlight triggers the production of Vitamin D to boost your immune system, but over-exposure to sunlight damages your white blood cells. So, if you do not want to get sick easily, do not stay out too long under the sun.
5. Burns skin – Ah, yes. Sunburn—the painful way to get yourself a tan. The reddish layer of skin that develops after too much exposure to the sun consists of damaged skin cells. It turns red because the body attempts to rescue the skin cells by supplying them with extra blood.
6. Causes color to fade – Pigments and dyes change color when they absorb UV light. So, it is not advisable to put out your paintings, furniture, and fabric out into the heat for so long.
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