More than one year after Odom was hospitalized for a near-fatal overdose, the 37-year-old former NBA star recently chose to seek professional help.
"Lamar checked into rehab last week. It was his decision to go back," a source tells ET. "He wants to get better and recently realized he needs to do this for himself, and especially for his children. He knows he needs help and unfortunately, this is something he'll need to take care of for the rest of his life. Drug and substance abuse is a serious issue."
The source adds, "His family and friends are standing by him through this and know he will come out as a better person."
Odom will be staying at a medical facility in San Diego, according to E! News, who was first to report the news.
In October 2015, Odom was discovered unresponsive at a brothel in Crystal, Nevada. He subsequently spent several weeks in the hospital, after which he began recuperating at a private rehabilitation center in Calabasas.
The two reached a settlement in October and their divorce was finalized by a judge on Friday. Their marriage will officially be terminated on Dec. 17, according to documents obtained by ET. For more on the former couple's challenging divorce, watch the video below.