Sun exposure will prevent multiple sclerosis


  • About 100,000 patients are affected by multiple sclerosis in France.
  • Exposure to the sun will increase vitamin D levels and protect against multiple sclerosis.

In France, approximately 100,000 people, including 700 children, are affected by multiple sclerosis, and 2,000 to 3,000 new cases are diagnosed each year, according to Health Insurance. According to work done by American and Australian researchers, it will be possible to prevent multiple sclerosis by sun exposure. The results of this study were published in the journal neurology 8 December.

To reach this conclusion, the scientists conducted their research with 332 patients aged 3 to 22 who had been suffering from multiple sclerosis for seven months, and 534 people who did not suffer from this autoimmune disease. They compared the duration of sun exposure using a questionnaire. According to the data, 19% of victims said they spent less than 30 minutes outside in the past summer, while 6% did not have multiple sclerosis. From this information, they assessed the risk of developing this pathology.

Increase in Vitamin D Levels

The results showed that spending more time outdoors reduced the chances of getting multiple sclerosis. “Sun exposure known to increase vitamin D levels”, Emmanuel Vaubent, a co-author of the study and professor in the department of neurology at the University of California in San Francisco, United States.

Sun exposure “Also stimulates immune cells in the skin that play a protective role against diseases such as multiple sclerosis. Vitamin D may also alter the biological function of immune cells and, as such, play a role in protection against autoimmune diseases”, she added.

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