Daniel Xander Freedman (17 August 1921 – 3 June 1993) was a psychiatrist and educator, pioneer in biological psychiatry.
Born in Lafayette, Indiana, he performed pioneering studies in the relationship between drugs and behavior. Researching brain mechanism in allergy, he discovered the link of hallucinogens to brain transmitters. He also found biological effects of environmental stress on the brain, and identified hyperserotonemia in autism.
After attending Harvard College in the class of 1943, he enlisted in United States Army Signal... more
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