A study recently published in the journal ‘Cancer’ shows that people who have had dental X-rays are more likely to develop a type of brain tumor called meningioma than those who have not. Though this study does not conclude dental x-rays cause tumors, but it supports previous research about a connection. Meningiomas are the most frequently occurring tumor in the head. They are located in the meninges, the tissues covering the brain. The vast majority are "benign" - or noncancerous - but, depending on their location, could cause blindness or other serious neurological damage.
http://thechart.blogs.cnn.com/2012/04/10/brain-tumors-linked-to-dental-x-rays/
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