Given that the DNA fragments can be very different, there is a strong likelihood that different fragments of varying DNA sequence can be incorporated into a persons DNA so not only is a person's DNA altered, it is altered in such a way no two strands of that individual person's DNA are the same.
This is bad for an adult, but it could be much worse for a developing fetus, a baby or a child. And we used to worry about the mutagenic effects of nuclear war - this could potentially be as bad or even worse.
“there is a strong likelihood that different fragments of varying DNA sequence can be incorporated into a persons DNA “
Since no person with a medical background has stated this I say you are making it up.
“it is altered in such a way no two strands of that individual person’s DNA are the same.”
Obviously you have never stayed at a Holiday Inn!