John Goodman's before and after photos reveal his stunning transformation. The actor showed off his incredible weight loss in New Orleans this week.

Goodman was photographed grabbing a smoothie on Tuesday. And he looked considerably thinner. He also appeared slim during a recent appearance on Live With Kelly.

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Watch a thinner John Goodman On Live With Kelly.

In fact, John Goodman has lost an estimated 100 pounds over the past year-plus. And he got some help from fitness expert Mackie Shilstone.

Shilstone told New York Post in 2015 that the actor slimmed down thanks to a "Mediterranean-style" diet of fish, nuts, fruits, and vegetables. He also took between 10,000 and 12,000 steps a day and worked out six days a week on a treadmill or elliptical. Goodman also stopped drinking and removed sugar from his diet.

FIND OUT JOHN GOODMAN'S WEIGHT LOSS SECRETS ...

"He remembers what it feels like to be extremely heavy and it’s something he doesn’t want again." Shilstone told People last year. "John is very agile. When I see him running I get out of the way! He can be a different type of actor now. He can take on athletic parts.”

John Goodman's weight had fluctuated in the past. But he realized in the past year that he had to commit to a permanent change in his eating habits.

John Goodman Before John Goodman looked noticeably heavier at the 2014 AFI Fest (Photo: Celebrity Monitor/Splash News).

"I used to go on these diets, take three months and lose about 60-70 pounds, feel great, and reward myself with crapola," he told Howard Stern last March. "Twinkies look good. [This time] I took it slow. I just wanted to change my lifestyle. You look in the mirror everyday and go, 'I gotta deal with this the rest of the day, I gotta deal with this schmuck?'"

Goodman also realized that he had been using food to fill a void in his life. And he lost weight once he learned to accept that void.

MORE DETAILS ABOUT JOHN GOODMAN'S HUGE TRANSFORMATION ...

"I think you’re trying to fill a hole that can’t be filled unless it’s filled with goodness, some kind of spirituality, not saying religion," he told ABC. "But just a belief in something higher than yourself, a purpose. But instead of filling it with booze or cocaine or food, you just acknowledge that it’s there. You can’t fill it. And you go on and live with it."

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