Toxoplasma gondii is a parasitic protozoan which is capable of infecting all mammals, although its primary host (i.e. the host in which it can reproduce sexually) is the cat family. Any cat: lion, cheetah, etc., & unfortunately, domestic cats. In humans, it has been associated with schizophrenia, obsessive compulsive disorder (OCD), bipolar disorder, suicide attempts, risk taking, & increased rates of traffic accidents.
http://www.abc.net.au/science/articles/2013/05/08/3754543.htm
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3515034/ / free will choose to do our own decision infected parasite pregnant immunocompromised infection infection change normal behavior increase chance chances schizophrenia suicide parasite is Toxoplasma gondii toxo T. gondii infects warm-blooded mammals survive in any creature complete its cycle of life reproduce sexually gut of a cat tabby infect any cat lion infected cat poo 100 million toxo eggs eggs can survive for more than a year eggs kitty litter box rat gut invades various target cells around the body muscle brain cells cells immune system dendritic cells travel around the body attack by the rat's immune system cross blood-brain barrier invade brain cells blood-brain barrier inside protective cysts specifically infects brain cells related to fear sexual pleasure dopamine hormone of pleasure reward run away smell of cat urine aversion to cat urine sexually reproduce remarkably specific behaviour toxo humans mild flu-like illness indulge in risky behaviour transplant surgeons motorbike riders infected with toxo cysts Army of Czech Republic vehicle drivers infected have six times as many accidents contributing factor several hundred thousand road deaths each year US Army blood samples soldiers for decades double chance diagnosed with schizophrenia significant increase in suicide rates infectious diseases brain nervous system /
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