according to sources Kardashian’s breakdown occurred after Odom left the family. He looked up to Odom as a father figure, but when Odom cut off the entire family, Kardashian became depressed because he felt abandoned by the only person he could relate to after his father died. And that’s when Rob got deeper into other drugs, which resulted in his weight gain. Khloe:
I felt guilt. I was not there to protect Rob. No one could make me not feel guilty.