Because your body absorbs X-rays, they contribute to your total radiation exposure over time, and that cumulative total correlates with your lifetime risk for certain health problems, such as cancer. The more radiation you're exposed to, the higher your risk. That said, you always have to balance the health risk associated with X-rays with the diagnostic benefits. CT scans are particularly useful because they can show lung, bone, soft tissue, and blood vessels with great clarity. From what you've told me, I can't judge whether the three CT scans you've had were all necessary, but almost all types of imaging tests are overused.
Radiologists often minimize the hazards and fail to fully inform patients of the risks.
My advice is to be sure you understand exactly why any X-ray is necessary before consenting to one. The best thing you can do is to safeguard your general health by taking antioxidant vitamins and minerals, drinking plenty of water, eating well, and exercising regularly. Tell us all about it on the Boards. Inc. All rights reserved. Reproduction in whole or in part without permission is prohibited.