Sean Milliken, who appeared on TLC's "My 600-lb Life," died Sunday. He was just 29.
Milliken was featured on the show three years ago, during which he spoke candidly about his emotional struggles and how he turned to food as a refuge. At the time, he was confined to a bed and weighed over 900 pounds.
"I would eat," he said, "and suddenly I felt a lot better."
TLC confirmed Milliken's death in a statement Tuesday.
“TLC is saddened to share that Sean Milliken has passed away,” the network said in the statement. “Viewers first met Sean in 2016 on 'My 600-lb Life' when he weighed over 900-lbs. Over the course of his weight loss journey, he victoriously lost over 400-lbs.
"TLC viewers caught up with Sean this past summer and learned that despite the loss of his mother, he was still continuing in his quest to live a healthier and happier life. TLC expresses its deepest sympathies to Sean’s friends and family at this difficult time.”
According to Milliken's father, Matt, Sean reportedly died of an infection.
“Sean was admitted into the hospital a couple days prior, because of an infection,” Matt wrote on Facebook. “Sunday he was having problems with his breathing, they were able to resuscitate him and a short time later his heart stopped.”