Causes. Giardia parasites live in the intestines of people and animals. Before the microscopic parasites are passed in stool, they become encased within hard shells called cysts, which allows them to survive outside the intestines for months.Once inside a host, the cysts dissolve and the parasites are released.auses. Giardia parasites live in the intestines of people and animals. Before the microscopic parasites are passed in stool, they become encased within hard shells called cysts, which allows them to survive outside the intestines for months.
On the other hand, those people who eat a lot of processed foods, and/or non-organic foods are susceptible to developing these health issues due to GMOs. For example, about 90% of the corn and soy in the United States is genetically modified. And a lot of processed foods have corn and soy ingredients.
prion diseases are caused by one of the body s normal proteins called the prion protein changing its shape and forming clumps of protein in the brain this process damages and eventually kills brain cellsin humans there are three different ways these diseases can starthe animal prion diseases include scrapie a common prion disease affecting sheep and goats which is not thought to pose a threat to human health and bovine spongiform encephalopathy bse or mad cow disease in cattle which can jump species to infect humans