Originally Posted by
JanMM
CT scans do result in radiation exposure.
An interesting point made in the book Spark is that radiation exposure can be beneficial. There was concern about some 45,000 ship yard workers who had been exposed to low-level radiation working on the Navy's nuclear fleet. Some years back, even cruiser's were being built with nuclear propulsion.
The Navy no longer builds cruisers and only new subs and carriers are built with nuke power now.
It turned out that those workers are healthier than the general population. They believe they got enough radiation to damage cells sufficiently to initiate the healing/growth process (the basis of exercise), but not enough to initiate the more typical negative radiation affects.
Al