I think maybe it also has a lot to do with how our nervous sytems have been affected. I didnt really notice this until about 4 months after I intially became physically ill. But then I found I started to startle easily and couldnt watch anything violent on TV at all ,where as things like that didnt use to bother me. Then I started to have panic attacks and I think, sorry cant remember who said it but our whole body chemistry has gone out of whack. TRACY