The cause of death was a stroke, according to The New York Times.
Barnes, a native of Chicago who died in Naperville, Ill., stepped down as chief executive of Pepsi's beverage business at age 43 in 1997, citing the fact that the demands of the job kept her away from her two sons, Brian and Jeff, and daughter, Erin.
She became CEO of Sara Lee in 2004 after her children entered high school. She stepped down from Sara Lee in 2010 after suffering a stroke while exercising at a local gym, The Times reported.
Click here to read The New York Times report.
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