Jon Hamm has had to go to some dark places over the years in playing Don Draper for AMC's Mad Men.  

The Struggle Against Alcohol Addiction For 'Mad Men' Star Jon Hamm 

The 44-year-old actor has claimed that playing Don has indeed affected him over the last decade, suggesting perhaps that it has led or at least contributed to some of his personal problems there.

"It takes an emotional toll especially when you are playing someone with a lot of emotions," Hamm told the Daily Mail on Wednesday.

Find Out Who Almost Played Don Draper On 'Mad Men' 

On Tuesday Hamm's publicist confirmed that the actor had recently completed a 30-day stay in a hospital for alcohol addiction. In the past Hamm has always struggled with depression, which could perhaps be tied to the substance abuse.

While playing Don hasn't always been easy, Hamm didn't claim that the character, himself an alcoholic, put him on a negative path.

"It doesn't necessarily rub off on you," he said of the character, adding, "it does take its toll."

Following his secret stay in rehab, Hamm was seen at the Lacma Film Festival in Los Angeles, Calif. on Thursday.

According to the Daily Mail, the actor was looking happy and enthusiastic as he attended the event. He has also managed to keep up with a number of interviews and press appearances, working them around his rehab stay.

Mad Men will return on AMC for the remainder of its seventh and final season in 2015.