"Joshua Buckholtz, a researcher at Vanderbilt University in Nashville, Tenn., thinks that the brains of impulsive people have too much dopamine. Dopamine is a chemical involved with many different brain functions, but in this case researchers are interested in drive. They believe high levels of dopamine are causing some individuals to behave rashly, perhaps by buying a food dehydrator they don't need.
And so it goes. Dopamine and Oxytocin seem to be at the root of nearly everything! (
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