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Is The Sun Good For Us?

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Is The Sun Good For Us? The sun is often portrayed as bad - it's UV radiation a cause of skin cancer and other harmful ailments, however without it we and most other animals and plants would not exist. It is also shown to have many positive effects such as vitamin D production. In my case study I am going to go into this in depth and try to find out whether the sun is good or bad for us. Points discussed will include: ~ The weather ~ Vitamin D production ~ Treatment of mental disorders ~ Treatment of diseases and cancers ~ Heat exhaustion ~ Cataracts ~ And skin cancer I believe that the sun is, overall, good for us. The evidence that persuades me is that without the Sun, the Earth's only source of energy would be geothermal. So, excepting some bacteria and small animals that live near geothermal vents under the oceans, all life on the planet would become extinct. Someone might disagree with me because they think that "it is a common misconception that the sun is necessary for the survival of human life."(killer boot-http://uk.answers.yahoo.com/question/index?qid=20061211111609AAVLYpH) ...read more.


Whilst I believe this to be true as the Skin Cancer Foundation is probably very reliable, it may be a little biased as although there is no reason to doubt the figures, only around 7000 UK citizens are diagnosed with melanoma each year, and other types of skin cancer, although being the most common type of cancer in white populations, are easy to treat and pose only a small threat to life. . Therefore I would be persuaded to believe that whilst some sunlight is definitely recommended, maybe not so much that you become sunburnt, as this can damage the DNA in your skin cells and increase your risk of skin cancer. The effect of UV radiation on the DNA in your cells. I am also persuaded that the sun is good for us because it can aid in the treatment of mental disorders such as S.A.D. disorder and depression. It can also help treat some diseases and cancers. The evidence to back this up is: ~ Some studies have shown that malignant melanoma is inhibited by vitamin D from sun exposure. ...read more.


there is some evidence against this, which, I feel, cannot be ignored as it has a strong basis in fact. However, I think the fact that the sun will eventually explode is rather irrelevant as it won't happen for millions of years and humans will probably be extinct via Global Warming or something by then anyway. The only view I really disagree with is the one expressed by "killer boot" - that the sun is not necessary for human life. I think this is false because there is only one study claiming this and it is very unreliable because there are no links to the said study or any indication on how it was carried out. Otherwise I think the other sources I used were all fairly reliable. However, to improve the range of sources and be surer as to the answer to the question "Is the sun good for us?" I would use some different sources e.g. books, newspaper articles, so as to have a wider selection of information. Resources New Scientist magazine The Skin Cancer Foundation http://uk.answers.yahoo.com/question/index?qid=20061211111609AAVLYpH http://www.fcn.ca/sun.html http://www.bmj.com/cgi/content/full/319/7202/114 http://www.livescience.com/health/060717_sunscreen_cancer.html http://www.taipeitimes.com/News/world/archives/2006/05/29/2003310593 http://seamania.blogspot.com/2006/05/sun-is-good-for-us-after-all.html http://www.cancerbackup.org.uk/Cancertype/Melanoma/General/Whatismalignantmelanoma http://www.livescience.com/health/060829_sunscreen_problem.html news.bbc.co.uk/.../medical_notes/3244581.stm http://www.mja.com.au/public/issues/177_03_050802/now10763_fig.jpg http://earthobservatory.nasa.gov/Library/UVB/Images/dna_mutation.gif ...read more.

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