There’s a parasite that can only survive on a cat, but it can infect human beings as well. Even more terrifying is that this parasite can actually affect the minds of human beings. The parasite is called Toxoplasma gondii, and according to the Centers for Disease Control, more than 60 million people in the U.S. may be carrying it.

The parasite can cause personality changes, correlating with mental health diseases like schizophrenia, autism and Alzheimer’s disease. University of Montana Microbiology Professor Bill Granath says some studies have also found women to be more prone to suicide.

“It’s a very insidious, some of the studies that you can read, how the parasite can attack certain nerves and manipulate various neurotransmitters and cause various mental illnesses. I guess you’d call it…altered states,” he explained.

To read more about the mind-controlling parasite that could be on your cat, click here.