parasites live in every animal on earth including humans. We don't want to believe this because we live in such a "sanitary" environment. They have been with us since the dawn of man and will continue to be with us until the end. We will not stop them from infecting us, BUT WE CAN clean them out of our systems before they can do any major harm. The toxins the parasites leave in us - their feces, urine and dead bodies - is what makes us so very ill. The symptoms of parasite infections mimic MANY diseases and parasite infections are VERY hard to diagnose. Please go to humaworm.com and read the information there. Do not feel pressured to buy anything, just learn. You seem to be just learning about parasites and it IS shocking to someone who just discovers what is actually out there! Good Luck!