The answer is yes, however those are extreme cases. Watch a few episodes of Monsters Inside Me to see what I mean... Since you've been dealing with this for 8 years, I don't think that is the case for you. What is more likely to occur is that you die from the cancer they can cause (or the chemo used to treat the cancer). Work on reducing your stress load. Also, get really good clean pics of the parasites you are expelling and upload them here so that others can help identify what you have. You need to know exactly which parasites you have so that you know which protocols to try. Good luck!