couple issues here, one is that "morgellons" is probably an already as yet known parasite, like, say: strongyloides... which fits many of the characteristics. (Ihave first hand knowledge. ) As far as the others ABSOLUTELY, UNEQUIVICABLY. Its simple really, not only does the parsite do its own particular parasite thing...but much more is inovolved, as in the bodys reaction to it (ie inflammatory, increased rate of cell turn over, compromise in function, genetic damage, or fitness of the body overall. So its quite easy to draw the connection to cancer which a systematic breakdown of the bodies multi defense mechanisms. Several correlations have already been made for particular types, such as breast, bladder,liver/ballbladder, mouth throat snd stomach maybe even lung. In lung in particular, there is a HUGE link missing in the smoking theory. Most assuredly smoking does contribute BUT, perhaps its merely a catlsyt in a reaction. Chronic inflamation could be a reason, but also if there were parasites actually living there it would cause increased turn over rate; thereby causing greater destruction. How else can we account for one person smoking 59 yrs with no lung disease, while another with only 20 years has to live on oxygen parasites are probably a good deal of how we age, in the impact that they have on our health, wear and tear etc, as well as diminishing our capacity to heal, not to mention suppresses the immune system.