"Ninety percent (90%) of the world population is infected with one or more parasites in their body, being able to coexist in the same host with up to five different types. The danger comes when the balance is upset, within the host, skyrocketing the number of parasites and the host starting to show signs of serious illness and even death in some cases. Parasitic infections caused by parasitic worms do not always cause disease in man, a number of carriers have been found who are fully healthy. Parasites are silent murderers claiming unsuspecting victims living in a people world that does not even imagine they exist. "
https://educate-yourself.org/cn/detectandtreatparasites12aug12.shtml#top