Kris Jenner has opened up about her fears about son Rob Kardashian in a new episode of Keeping Up with the Kardashians. The queen of the clan has revealed that she is worried that Rob, who has struggled with his weight for years, could die if he doesn’t change his lifestyle. "If I don’t help him do something drastic, he’s going to die. I’m just waiting for this horrible thing to happen and there’s nothing we can do about it," she said. "I have a son, he was the star of track team in high school, he was the star of the basketball team… He was someone who was very athletic and he's gained over 100 pounds in the last year." "I don't talk about it very much, so it's very upsetting. He doesn't want to participate, he doesn't go out of the house. He's missed Christmas, he missed Kim's wedding." Kris alongside Kim and Rob. Speaking of Kim, who Rob recently compared to Amy Dunne in Gone Girl, she isn’t so sympathetic to her brother’s problems. She told Kris and sister Khloe: "I think that now what we have to do is everyone back off. Everyone licks Rob’s a** and does whatever he says. "And at some point you have to give it up! We all make his life so easy… We’re not going to cater to him anymore, but it has to be all of us."