What causes MS?

While the cause of MS is not fully understood, it is clear that both genetic and environmental factors play a role. It has been shown that people who have a close relative with MS are 30-40 times more likely to develop the disease themselves.

Environmental factors such as a lack of vitamin D, smoking and dietary factors, including a high intake of saturated fat, are associated with higher rates of MS.

MS is much more common in modern, developed countries that are further from the equator.

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