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Sun may reduce Multiple Sclerosis risk

                          Multiple Sclerosis (MS) is more prevalent at higher latitudes, areas that generally has lower levels of ultraviolet radiation - those produced by the sun. Researchers surveyed 136 MS patients and 272 people who did not have the diseased condition. All the participants were asked about how much they had exposed their skin to the sun in the past and what precautions they had taken to protect themselves. Researchers found people whose skin had been exposed to higher amount of sun during the age range of 6 to 15 years showed greater signs of skin damage - however a lower risk of MS. Suggesting that MS may be linked to insufficient exposure to ultraviolet radiation, researchers cited insufficient Vitamin D that this exposure to the sun generates, as second reason. But they found no link between MS and sun exposure in the decade before the onset of symptoms. This, they suggest, indicates that exposure to sunlight may only have an effect on the chances of developing the disease if it takes place at a time when the immune system is still developing. Most people were probably exposed to enough sun during the summer to generate the protective effect. But it was possible there could be a problem during the winter when levels of sun exposure were so low.




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