EXCLUSIVE: Rob Kardashian Living on His Own as Family Worries About His Health, Source Says

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Rob Kardashian is still struggling with his weight, and isn't doing much to shed the pounds coming into the new year, a source close to Rob tells ET exclusively.
Late last month, the 28-year-old reality star was hospitalized after he wasn’t feeling well, and was diagnosed with diabetes. According to our source, he'd actually been warned about the possibility of the disease "for years."
"He's very overweight and hasn't been working out," the source says. "The diabetes diagnoses comes as no surprise. He has been warned about this for years, and never did anything to prevent it."
"The family is worried about him, but at the same time, they're glad this wake-up call has come," the source adds. "It could have been something a lot worse that happened to him, and they're hoping he finally gets better with new medication."
Rob is also no longer living with his older sister, Khloe Kardashian, and has instead moved into his own condo in a gated community in Calabasas, California, the source shares.
"This is a good thing," the source comments about the move. "He needs to be on his own instead of around his sisters all day and night."
Rob's sister, 35-year-old Kim Kardashian, recently caught some flak from fans after she poked fun of his weight gain in an upcoming episode of Keeping Up With the Kardashians. The harsh diss came after she said Rob's worst tattoo was the portrait he got of singer Rita Ora, whom he dated for a short time in 2012. Kim said that as her brother gained weight, Tattoo Rita also got larger.
"He covered [his ex-girlfriend Adrienne Bailon’s name] with a life-sized Barbie doll that has now turned into a Cabbage Patch," Kim joked, causing their mother, Kris Jenner, to giggle as well. "Have you seen it lately? She's, like, huge!"
And Kim isn't Rob's only sister commenting on his issues. In Khloe's recent memoir, Strong Looks Better Naked, the 31-year-old admitted that previously catering to her brother's every whim wasn't best for him.
"I was constantly checking up on him, making sure he had the food he liked, seeing if he needed anything from the store, asking what I could do to make him more comfortable," Khloe wrote. "My sisters said I was babying him and that he'd never leave the house if I didn't let him fend for himself. I argued with them because it was an emotional issue, and emotion tends to cloud your thinking."
"He will make changes in his life when he is able to motivate himself," she added. "And as much as I wish I could light that fire for him, I now see that the chances of that happening are slim to none."
Late last month, ET learned that Rob has recently become reclusive, not leaving his neighborhood and no longer doing routine workouts. Rob has stayed out of the public eye in recent years, and was last spotted back in June, hitting up an In-N-Out Burger in Woodland Hills, California, with some friends.
Still, despite the seriousness of Rob's recent diagnosis, the source notes that he is currently "stable and fine."
"He was never close to a coma," the source notes, referring to recent rumors. "Those reports are a bit bogus."
Watch the video below for more on Rob's diabetes diagnosis.