They don't believe since this isn't a third world country we can get them. Dr oz said 90 percent of Americans have parasites. Some like me with severe infestations. Dr Hulda believed parasites caused sickness and many cancers. I believe if we handle this issue we can all collectively can be healthier. The first step is acknowledging parasites are a possibility. Most doctors in this country when you bring it up have slim to none comprehension of them.