Researchers have discovered link between head injuries and Parkinson's disease.
A study indicates that people who suffer a head injury may be four times more likely to develop Parkinson's disease
compared to those who have not. They also added that the risk increases on the severity of injury. In general men and women have about a one in 75 chance of developing
Parkinson's disease. About 4 million people are affected by this disease. However researchers also indicated
that it is not definite that one will develop Parkinson's disease as a result of severe head injury.