Cat Parasite Linked to Human Suicide

Women infected with the cat parasite Toxoplasma gondii are more likely to attempt suicide than non-infected women, new research finds. The reason for this connection, however, remains mysterious.

Humans can pick up the parasite from contact with cat feces, or by eating undercooked meat or unwashed vegetables. 

Some studies have linked infection by this parasite with a variety of mental health and brain problems, including schizophrenia, neurosis and brain cancer.

http://www.livescience.com/21345-t-gondii-parasite-suicide-attempts.html