During one of the episodes on Keeping up with the Kardashian, Khole was heard blaming her estranged husband Lamar for her younger brother's drug addiction. But it has been revealed that Rob's drug addition had nothing to do with Lamar's drug use.
It has been revealed that Rob's drug addiction was all based on fatherly abandonment. He had always looked up to Lamar as the father after he lost his father in 2003. He took the death of his father much harder than his siblings and never really got over it.
According to a source connected with the Kardashian family, Rob was devastated when his dad and when Khloe married Lamar ... the basketballer became a father figure to Rob.
Rob thrived around Lamar, inspiring him to start a business and get in awesome shape. They became best friends, but Rob idolized him. When Khole talked about Rob's recent troubles were triggered by the dark things that happened in the house, the source said she was referring to the arguments and breakdown of the marriage.
Lamar cut off the entire family and went radio silent ... Rob went into a tailspin because he felt abandoned by the only person who measured up to his dad. And that's when Rob got deep into lean and other drugs, which resulted in a dramatic weight gain.