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Shocking: Khloe Kardashian And Lamar Odom's Marriage Crisis Reportedly Triggered By Drug Abuse

ORANGE, CA - JUNE 07:  Professional basketball player Lamar Odom and TV personality Khloe Kardashian make an appearance to pr
ORANGE, CA - JUNE 07: Professional basketball player Lamar Odom and TV personality Khloe Kardashian make an appearance to promote their fragrance, 'Unbreakable Bond,' at Perfumania on June 7, 2012 in Orange, California. (Photo by Imeh Akpanudosen/Getty Images)

The marriage of Khloe Kardashian and Lamar Odom is in crisis, and TMZ has learned ... the core reason is hardcore drug abuse.

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