MS activity alters with seasons


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The severity of multiple sclerosis (MS) may change with the seasons, say US researchers.

Brain scans of patients compared with weather patterns at the time showed higher levels of disease activity in the spring and summer.

The US researchers said the findings had implications for testing new medicines, which may show up different results depending on the time of year.

It is not clear why warmer weather would have this effect.

Other studies have shown that vitamin D from exposure to sunlight may have a protective effect against MS - a long-term inflammatory condition of the central nervous system.

The lesions were up to three times more likely to appear in the warmer spring and summer months.

Further analysis also showed that there was a link between both new disease activity and intensity of disease activity and the warmer months.

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Oh dear...I read the title and thought "Microsoft activity alters with seasons"...I thought it made perfect sense.

So one study shows that sunlight is good against MS, but this study shows that spring and summer has a negative impact? So while vitamin D is good, heat is bad?

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