Dr. Robert Sapolsky is a professor of neurobiology at Stanford University. He started his career studying baboons, charting the relationship between stress hormones and an individual animal’s social ranking in the baboon society hierarchy. The lower the rank, the more stress the animal experiences, the more consequences there are to the health outcomes and longevity of the baboon. Making a parallel to human society, the conclusions of Dr. Sapolsky’s study is that it sucks to be at the bottom of the social order. In his books “Primate’s Memoir” and “Zebras Don’t Get Ulcers,” Dr. Sapolsky provides copious details of his work and his conclusions. (see Recommended Books for details) But residing on the bottom of the social ladder is not the only problem a mammal like us can experience. In his video interview with Edge (www.Edge.org), Dr. Sapolsky describes the adventures of Toxoplasma–a protozoan parasite carried by cats which causes an infection Toxo–in our amygdala. Post an active infectious state, Toxo is able to manipulate human dopamine levels. People with the post-Toxo infection have higher than normal dopamine levels, resulting in some interesting cognitive consequences. There’s been solid research that documents a high level of Toxo infections in schizophrenic patients. There…

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