Jeff Bezos' mother, Jacklyn Gise Bezos, died at the age of 78 after a long fight with Lewy body dementia, the Amazon founder announced on Thursday.

Jackie Bezos, the mother of billionaire Amazon founder Jeff Bezos, has died at 78 following a yearslong battle with dementia.

Jacklyn Gise Bezos, the mother of Amazon founder Jeff Bezos, has died at 78 after a five-year struggle with Lewy body dementia, a progressive brain disorder. Along with her husband Miguel, she was the first to invest in Amazon.

"She passed away today, surrounded by so many of us who loved her," the Amazon founder wrote in a tribute for her.

Amazon founder and former CEO Jeff Bezos is showing his softer side following the death of his beloved mother, Jackie Bezos, who passed away this week at the age of 78. While the famed tech visionary did not share her exact cause of death, he revealed in a heartfelt post that she had endured “a long fight with Lewy Body Dementia.”

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