This is what Howard Schubiner wrote to me about the condition that Luigi Mangione was suffering from, namely spondylolisthesis:
"What Dr. Sarno would say is that this condition, spondylolisthesis, is very commonly seen in people who have no pain at all. We don't know the degree of spondy-- that this person [i.e. Mangione] had. Mild (grade 1 and 2) cases usually do not cause pain and these are the most common ones, by far. Severe cases (grade 3 or 4) usually do require surgery.
Thanks very much, Howard"
We just don't know how severe a case of spondylolisthesis Mangione was suffering from. Dr Schubiner also sent me a form to chronicle my own experience with a mind-body syndrome. So my case is being added to the survey Dr Schubiner is conducting.