There are parasites such as malaria that do serious damage, there are other parasites that you can carry for years and not know you have. The point is there are those that sell products like Humaworm that attempt to scare people into buying their product while at the same time selling a product with a dangerous herb like Wormwood , all in the name of profit. For those that are unaware of the dangers of Wormwood I seriously advise that you check it out for yourself. Many times one is better off without Humaworm than with Humaworm if for no other reason than avoiding the Wormwood herb. There are other more effective and safer ways of dealing with pathogens and living creatures in the body than poisoning that body with dangerous herbs like wormwood.