This past weekend, Rampage Jackson made his return to the Bellator MMA cage as he defeated Satoshi Ishii via split decision in the main event of Bellator 157.

Following the fight, which took place at catchweight of 225 pounds, Rampage revealed that he had been diagnosed with an under-active thyroid gland, which could prevent him from going back down the light heavyweight.

He spoke on The MMA Hour:

“I’ve been dealing with this for like a year,” Jackson said. “I’ve been keeping it kind of to myself. It kind of bummed me out. If I don’t stay on top of it, I gain weight really fast. That’s what’s been going on. I’ve been noticing after my fights I’ve just been gaining more weight fast, I didn’t know what was going on.”

“I think I’ve gotta change my lifestyle, change the way I eat and stuff like that,” Jackson said. “Then maybe I can make 205.”

This likely was a contributing factor in the scuffle Rampage had with his coach leading up to the fight in regards to him eating a piece of Starbucks cake the week of his fight.