"I was looking everywhere for relief/comfort/distraction. And I turned to food. It could have been anything. Drugs. Alcohol. Sex. But eating became the one thing I could look forward to," Miller wrote.
"There were stretches when the highlight of my week was a favorite meal and a new episode of TOP CHEF. Sometimes that was enough. Had to be. And I put on weight. Big f***ing deal."
Miller went on to say he was proud of the photo as it "reminded of my struggle ... my endurance and my perseverance in the face of all kinds of demons".
He last hit the headlines in 2013 when he revealed he was gay in a letter that declined an invitation to the St Petersburg International Film Festival.
Miller is returning to Prison Break for a nine-episode arc airing later this year.
- nzherald.co.nz