Harrison went to see his doctor who gave him a wake-up call. The doctor asked him to loose weight otherwise he could end up contracting diabetes.
It was a life-threatening situation for Corey Harrison. So he decided to have a lap band surgery. However, the doctor first put the Pawn Stars cast member on preventative diabetes medication.
"I literally drove straight from the doctor to the lap band center and had the surgery almost immediately," Harrison recently told PEOPLE about his 2010 weight loss procedure.
"Back then, the surgery was too expensive for my bank account, so I had to pay with four credit cards, but it was something I had to do – I was not going to get diabetes!"
31-year-old Corey Harrison first dropped 50 lbs post surgery in the first six weeks through gastric band procedure. And then in the next 12 months, the Pawn Stars member lost another 100 pounds. And after three years of hardship, Corey Harrison finally lost 192 pounds.
He does not want to gain that much weight again. That's why he goes to have his band checked on a monthly basis. "I could never go back to weighing as much as I did," he said. "It made me realize what I ate, how I ate and what I did to myself. It was a WOW moment."
The life after getting smart and fit is totally different for Corey. He is now enjoying every bit of his life. And that's what he has always wanted.
"I'm actually excited to go to the gym now. I box 12 rounds a day five days a week," he said.
"When I was a teenager I loved snowboarding, but in my 20s I was too big to strap my feet in the boards. Being able to finally touch my toes made me realize I could snowboard again, so I went out and got new gear immediately."
His three year struggle to get smart also inspired Austin 'Chumlee' Russell , his longtime friend and fellow Pawn Stars cast member. And now Chumlee also wants to get smart by dropping his weight just like Corey.
"It was time for me to get healthy," said Russell. "I started at 320 lbs. and now I'm down to 225. When I first began, I eliminated all processed foods except mustard. Now, 'everything in moderation' is my motto."
Not only is Corey Harrison happy at his major weight loss but so are his Pawn Stars fans. "When I meet fans, they are always congratulating me on the weight loss," says Harrison.
"They actually say, 'You look just like that guy from Pawn Stars, but you are a lot skinnier and better looking than him.'" “I say, 'trust me, if I was going to pretend to be someone, it wouldn't be that guy from Pawn Stars.' "
You can see a slimmer version of Corey Harrison every Thursday on History at 10 p.m. EST in the Pawn Stars spinoff series, Pawnography. See him tonight and share your views with us.