Lamar Odom Drug Abuse Rumors: NBA Star Addicted to Oxycontin, Ambien? Rob Kardashian Known For a Year?

Though the Kardashian girls are usually talking to their brother Rob about his emotional issues, turns out it's actually Khloe's on-again off-again husband and NBA star Lamar Odom. The two have reportedly ended their separation and moved back in with one another. But as we all know in Hollywood, old habits die hard.

According to RadarOnline.com, Odom still suffers from an OxyContin and Ambien addiction. Apparently Rob has known for a year. Could this explain the Kardashian brother's mood swings? Empathy for his closest friend?

Sources claim Rob has, "known about Lamar's drug addiction for over a year. How could he not as he has lived under the same roof with Lamar and Khloe? Rob even spent a significant amount of time with Khloe and Lamar when he was traded to the Dallas Mavericks."

Usually Rob's outwardly downer behavior is under interrogation from his protective sisters. Khloe is usually the one constantly hounding him, and prodding him to make sure everything's alright. Turns out it was her husband she should have been focusing on.

The same source that broke the Lamar drug addiction news says Rob may be moody but he's not really into drugs all that much.

"Rob isn't a party animal like Lamar, and drugs just aren't his scene. The two used to be very close, but have drifted apart because Lamar has been abusing Oxy and cheating on Khloe. Rob has continued to live at the Tarzana mansion to support Khloe, he really has her back."

If the drug addiction rumors are true, we wish Lamar Odom and his family the best in a trying time.