Getting more sunlight could be a very good thing for multiple sclerosis risk.
There are several factors that play a role in reduced multiple sclerosis risk, and sunlight might be one of them, according to a new report.
To do so, they tracked the histories of about 150 women diagnosed with multiple sclerosis around age 40 and about 230 women around age 40 without multiple sclerosis. They then asked the participants to complete a questionnaire that asked about their sunlight exposure during the summer and winter from adolescence to adulthood.
After analyzing the results, they found that women who lived in sunnier climates with the highest exposure to UV-B rays were 45 percent less likely to develop multiple sclerosis.
The number was even higher for those exposed to sunlight as children. Women who spent lots of time in the sun between ages 5 and 15 were 51 percent less likely to get multiple sclerosis, compared to those who lived in shadier areas during the same time span.
“Our findings suggest that a higher exposure to the sun’s UV-B rays, higher summer outdoor exposure and lower risk of MS can occur not just in childhood, but into early adulthood as well,” co-author Helen Tremlett said in a statement.
Why is that?
UV-B rays help the body produce vitamin D, and lower levels of vitamin D have been associated with an increased risk of multiple sclerosis. Scientists believe the more vitamin D a person has the more likely they are to dodge a diagnosis.
While they did note that the sun exposure numbers were self-reported and the individuals’ measurements may differ from actual exposure time, they believe their results are promising.
Related article: Sunlight May Influence Age of Onset of Multiple Sclerosis
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