People who spend more time in the sun and those with vitamin D levels were higher than the risk of multiple sclerosis, according to an Australian study published in the journal Neurology.
Robyn Lucas from the Australian National University and colleagues conducted the study with 282 people who had or had presented the first signs of demyelination and 395 people injured. About 60% of people who have a first demyelinating event in multiple sclerosis will develop over the next 10 years. The risk of developing early signs of the disease was greatest among those who had less sun exposure during their lives and in the months before the first signs. Those with the highest levels of vitamin D were also less likely to present such evidence.
Previous studies that had shown a link between disease and vitamin D had been conducted with people whose disease was more advanced. It was not possible to know whether the low level of vitamin D caused the disease or was caused by the latter.
The study also shows that the level of vitamin D and sun exposure are independent factors that influence the risk of the disease.
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