Tom Hanks reveals he has Type 2 diabetes

During an appearance Monday on "The Late Show with David Letterman," Tom Hanks said his doctor had diagnosed him with Type 2 diabetes.

Hanks, 57, was on the show to promote his new film "Captain Phillips." He said his physician told him he had moved from a prediabetic state to having the disease.

"I went to the doctor and he said, 'You know those high blood sugar numbers you've been dealing with since you were 36? Well, you've graduated,' " Hanks told Letterman. " 'You've got Type 2 diabetes, young man.' "

Hanks has since lost weight to try to control the condition.

“My doctor said, ‘Look, if you can weigh as much as you weighed in high school, you will essentially be completely healthy and will not have type 2 diabetes.’" Hanks said. "And then I said to her, ‘Well then I’m going to have type 2 diabetes because there is no way I can weigh as much as I did in high school.”

“I weighed 96 pounds in high school,” Hanks added, calling his teenage self “a very skinny boy.”

He has continued to take questions about the condition after the appearance as he works to improve his own health.

“Type 1 diabetes is very bad. Type 2 diabetes is controllable,” Hanks said. “You’ve just got to lose weight and exercise a lot and change everything you eat and never ever ever ever ever have any fun whatsoever.”

“It turns out, I do want to live,” Hanks said.

“And it means I have to stay skinnier.”