Mind Control by Parasites
Half of the world's human population is infected with Toxoplasma, parasites in the body—and the brain.

# Toxoplasma infection is associated with damage to astrocytes, glial cells which surround and support neurons. Schizophrenia is also associated with damage to astrocytes.
# Pregnant women with high levels of antibodies to Toxoplasma are more likely to give birth to children who will develop schizophrenia.
# Human cells raised in petri dishes, and infected with Toxoplasma, will respond to drugs like haloperidol; the growth of the parasite stops. Haloperidol is an antipsychotic, used to treat schizophrenia.

http://news.yahoo.com/s/space/20060211/sc_space/mindcontrolbyparasites