Rob Kardashian diagnosed with diabetes after being rushed to hospital.

Kris Jenner's only son, Rob Kardashian was rushed to a Los Angeles-area hospital over the weekend when he began feeling ill and his condition worsened.

After a series of tests were conducted, doctors told Rob that he suffered from diabetes, which was news to him, according to TMZ.

The incident is said to be a "wake up call" to Rob that he needs to get healthy.

"He's home already. He went for a little and is fine now. It was a wake up call," A source told E! News.

The insider said 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.