The Rob & Chyna star checked into a hospital Wednesday night near Hidden Hills, CA, for diabetes complications and was released Thursday morning around 1PM ET/PT, Us Weeklyreported.
Kardashian's fiancee Blac Chyna and mother Kris Jenner both reportedly visited him in the hospital overnight, but his seven-week-old daughter, Dream Renee, did not make an appearance.
According to a family source, Kardashian's condition is not life-threatening and he was stabilized during his hospitalization, E! News reported.
Details regarding his complications and treatment, however, have not been disclosed.
It all began when Kardashian allegedly wasn't feeling well last night. An insider told People that he "recognized that his symptoms were diabetes-related," adding that Kardashian "hasn't been taking care of himself, and that's why he's now sick again."
Kardashian and Chyna split last week after a blowout fight but then reconciled a few days later. The couple is reportedly going to counseling sessions together and living apart for the time being.
"Rob has made some changes to his lifestyle, but all the latest drama with Chyna has made him depressed," the insider continued. "And he has been on a terrible diet."
Kardashian has owned the fact he becomes stressed out around the holidays and struggles with jealousy issues and insecurities mainly because of his weight.
The former Keeping Up with the Kardashians star learned of his type 2 diabetes diagnosis in Summer 2015, and after refusing to take insulin, was hospitalized in December of that year. Kardashian recently toldPeople he felt like he "was going to die" at that time and intended to make major life changes.
Kardashian then revealed in August 2016 he was diabetes-free after much diet and exercise. He also vowed to get healthy again for Dream, who was born on November 10.