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Age of onset for multiple sclerosis ‘linked to distance from equator’

There is a link between exposure to sunlight and the progresssion of multiple sclerosis.

People living in countries further away from the equator develop symptoms of multiple sclerosis at an earlier age, research suggests.

Both genetic and environmental factors are believed to be to behind the development of multiple sclerosis (MS), with previous work revealing that prevalence of the disease is higher among those living further away from the equator – in other words, in locations with higher latitudes.

It is suggested that the link is down to variations in levels of sunlight and hence levels of vitamin D – the production of which is triggered in the skin by UVB radiation.

But the latest study suggests it is not only the prevalence of the disease which is linked to latitude.

“The main finding is that if you have higher latitude you have earlier age of onset,” said Eva Havrdova, professor of neurology at Charles University in Prague and co-author of the research.

Read Full Article: Age of onset for multiple sclerosis ‘linked to distance from equator’ | Society | The Guardian

Read Full Article: Age of onset for multiple sclerosis ‘linked to distance from equator’ | Society | The Guardian

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