Brain Tumors Linked to Dental X-Rays

April 11, 2012 reports on a study published this week in the journal Cancer which 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. This does not prove that X-rays cause tumors, but supports previous research about the connection. Dental X-rays have also been implicated in thyroid cancer. "It’s a cautionary tale ... we do know that radiation can cause tumors, and we have to be judicious with its use," said Donald O’Rourke, MD, associate professor of Neurosurgery who was not involved in the study. There is a latency period - a lag time - of about 20 to 25 years with meningiomas induced by radiation, O'Rourke said. Only about one percent to five percent of meningiomas are cancerous, but in people with known increased radiation exposure, that risk can go up, he said... Read More

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