As he says, "All ionising radiation damages human chromosomes. There is no safe level. The lower the dose the less likelihood of damage. All xray examinations, whether they are dental or medical, are cumulative and each exam increases the risk of several types of cancer"
He is absolutely correct. Every medical doctor knows that.
Ionising radiation damages DNA in cells - that's a cold hard scientific fact. Our bodies do their best to repair that damage. Sometimes they can, sometimes they can't. The risks are greater when you are younger.
The very latest high quality studies on x-ray risks have led to some hospitals in Australia requiring informed consent for even a single CT scan for children, for example.
Of course, everything is a balance of risks. You absolutely need an x-ray if you have suspected broken bones or any of a number of other medical conditions. But do x-ray body scans seriously/significantly reduce the terror risk? I doubt it very much.
And yes, Ann Coulter is a
moron, and has severely misinterpreted what the studies say. But then again, she thinks the current scientific evidence proves the earth is 6000 years old too.