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Now it’s suggested that a lack of exposure to strong sunlight may be giving people multiple sclerosis (MS).
Suspicions were aroused when it was found that ethnic minority people form countries close to the equator had a far greater prevalence of the disease in London than in their own countries.
The chances of contracting MS vary greatly by ethnicity anyway. There are about 100,000 MS sufferers in the UK with white people most at risk while people from sub-Saharan Africa and south Asia suffer least.
Based on a study of health records of almost a million people in east London, the gap narrows significantly in populations living there. Asian and black people had several times the risk of those still living in their home countries.
They found that the prevalence of MS among white people was 180 per 100,000…
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