According to TMZ,  Lamar Odom simply up and vanished and folks associated with him are extremely concerned. They are scared that he’s off on a drug binge.

Folks on both the Odom and Kardashian sides of the families, haven’t had contact with him in over a week.

TMZ first reported … Khloe Kardashian threw Lamar out of the house Wednesday after attempting an intervention which Lamar  rejected.

Lamar’s been battling addiction for at least 2 years — and even reluctantly agreed to go to rehab in San Diego a year ago … although he bailed after 3 weeks.

TMZ‘s sources say Lamar Odom has started losing it since basketball season ended and he became a free agent.

Those sources say his drug addiction is the core reason why his marriage to Khloe has fallen apart. The families are  concerned about him doing crack cocaine.

Also On Magic 95.9: