Rob Kardashian, known for his drastic weight loss, has again started gaining the pounds making the Kardashians and the Jenners worried, Radar Online reported Thursday. Rob, who struggled with obesity, was seen with a slimmer body in recent months.

“Rob has gone off the rails again,” a source told Radar Online. “He is, once again, out of control” and “the entire family is terrified!” the insider added.

“He was doing so well for a minute but is now off the radar again and he seems to feel neglected because the entire family is focused on Kim,  as usual,” the source said. “Nobody knows what to do anymore because Rob will not even leave the house. He seems really bad off and everyone is really worried.”

In March, Rob was reported to have been working hard to lose weight and kept updating his fans about his workout. He also reportedly changed his diet habits to get fitter.

Family friend Malika Haqq at the time said that the 28-year-old was “taking care of himself.” “I think that’s how it should be for everyone. When you’re ready to post, post. When you’re ready to be seen, be seen. When you don’t, leave him alone. We’re really defensive about Rob,” Malika said.