Can Humans Be Controlled by Tiny Parasites?

A new study finds that a common parasite could be influencing human behavior.

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More than 60 million Americans carry the single-celled parasite Toxoplasma gondii, which infects brain tissue.

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  • Jason Koebler is a science and technology reporter for U.S. News & World Report. You can follow him on Twitter or reach him at jkoebler@usnews.com.