Cause+Multiple+Sclerosis+Benjamin+and+Marcus

=Cause of Multiple Sclerosis =

Scientists still have no definite answer to the cause of MS. However, there are many theories on how MS can develop. Many scientists agree that MS could have been caused by a virus acquired in the first 15 years of life and has delayed symptoms and effects. This virus is thought to cause this autoiommune disorder by using the body's defense system to attack and destroy scattered areas of the myelin sheath.

MS damages the **Myelin Sheath** which therefore affects the messages sent to the brain via nerves, which means symptoms. There are many theories of what plays a role in the cause of MS. MS is much more common in temperate areas like Europe and America, and the ratio of the chances of getting MS women to men is 2:1. Also, if a relative has this disease, the risk is much higher, thus, scientists are investigating if genes play a role too. Scientists are currently researching about whether or not the vitamin D given by sunlight in temperate zones affect the chances of getting MS. Some scientists suspect that MS may have came from Scandinavia where the Vikings came and attacked Europe and passed on disease, as it is more prevalent in caucasians with an European background.

What do most scientists believe the cause of MS is? Which group of people need to keep an eye out for MS?
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