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Rob Kardashian, Robert Kardashian

Denise Truscello/WireImage

A new development concerning Rob Kardashian's health has been revealed.

E! News confirms that the 28-year-old, who has remained away from the spotlight for quite some time now, is back at home after being diagnosed with diabetes.

Rob was rushed to a Los Angeles hospital after not feeling well over the holiday weekend. Once his condition seemed to worsen, he was taken to the doctor to see what was going on. After performing various tests, doctors concluded that Rob is diabetic.

"He's home already. He went for a little and is fine now. It was a wake up call," the source tells E! News. The insider adds that Rob's tests revealed his blood sugar levels were very high, and doctors told him that he needs to lose weight, exercise and dramatically change his diet, or it will get worse. 

Rob's well-being has been in question ever since he decided to become reclusive, and the speculation was heightened when sisters Khloe and Kourtney Kardashian each took to Instagram to share touching messages about their little brother.

Rob Kardashian, Robert Kardashian

Alexander Tamargo/Getty Images

The 31-year-old Keeping Up With the Kardashians star shared an adorable throwback selfie of herself pouting for the camera while brother Rob gave her a kiss on the cheek.  "If only you could see yourself through my eyes!" she captioned the blurry shot on her Instagram account. "I'll forever be obsessed with you! My one and only! #MyAce"

Meanwhile, the mother of three shared another photo of Rob sleeping on the couch with a simple caption that read, "Bob" with a heart emoji.

The former Dancing With the Stars competitor has stayed out of the limelight for more than a year, even missing sister Kim Kardashian's wedding to Kanye West, and has refrained from appearing in person on Keeping Up With the Kardashians as he battles depression and weight gain of an estimated 100 pounds.

"Rob is such a great guy," Khloe told People magazine in October. "He's charming, charismatic, everything. That's what's so infuriating. I'm like, 'Where is your will to live life? Let's be around people!'"

Rob Kardashian, Robert Kardashian

Alexander Tamargo/Getty Images

Ultimately, Rob "has to figure it out for himself," she added. "And he has so many people who want to help him."

Additionally, mom Kris Jenner gave us an update on Rob's health not long ago. "He's OK. He's just working on himself a little bit and trying to be a better Rob, so I just have to trust that he's good," she recently told E! News' Maria Menounos. "We're all here to support him for whatever he needs, but he's doing OK."

TMZ was first to report the story.

Originally published on Dec. 29, 2015, at 4:04 p.m.