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Rob Kardashian has been catching plenty of flack from the media over his recent weight gain, but it looks like he may be dealing with issues bigger than his expanding waistline.

The 27-year-old Keeping Up With the Kardashians star, who addressed his critics on Twitter earlier this week, announcing, “I’m aware that I’m fat,” is reportedly spiraling out of control, thanks to a potent combination of depression, drinking, and prescription drugs.

“He’s not exactly the famous one in his family and he sort of feels like he’s nobody except the Kardashian name,” a source close to the Arthur George designer reveals to RadarOnline.com.

While Rob may have started by suppressing his feelings with food, the source claims that the bigger issue is Rob’s self-medicating with drugs and booze.

He takes Xanax and has been drinking really heavily,” says the insider. “Not to mention he’s eating like crazy!”

While Rob may be battling some demons, he made it clear to his followers on social media that he’s not planning to get the kind of help so many folks have suggested he needs.

After explaining that he’s not much of a believer in rehab or therapy, Rob tweeted, “My only therapy will be in the gym.”

Are you surprised that Rob is dealing with such major issues?

Source: RadarOnline.com