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A trader rubs his eyes on the floor of the New York Stock Exchange before the closing bell May 7, 2010 in New York City. - 

According to a study out of The Rady School of Management at the University of California San Diego, there's a strong connection between daily stock returns and hospital admissions. The research found that hospitalizations -- especially those for psychological conditions like anxiety and panic disorder -- rise on days when shares fall. 

University of California San Diego finance professor Christopher Parsons led the study and presented the findings at the annual meeting of the American Economic Association earlier this month. He joins Marketplace Morning report David Brancaccio to discuss. 

Follow David Brancaccio at @DavidBrancaccio