Tom Hanks reveals he has type 2 diabetes

Tom Hanks has revealed he has type 2 diabetes, and that he can get rid of it on one condition: He must revert back to his high-school weight ... of 96 pounds (!).

On "The Late Show With David Letterman" on Monday, the "Captain Phillips" star said he has been experiencing symptoms (excessive thirst, urination, and hunger) of the disease for two decades, but was only recently diagnosed.

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

Watch Tom Hanks's entire "Late Show" interview:

Type 2 diabetes can initially be controlled by diet and exercise, though 57-year-old Hanks did not seem to be very optimistic about plunging below 100 pounds.

"My doctor said, 'If you can weigh as much as you weighed in high school, you'll essentially be completely healthy and will not have type 2 diabetes,'" Hanks recalled, quipping that he was about "96 pounds" and was "very skinny" back then: "Well, I'm going to have type 2 diabetes, because there is no way I can weigh as much as I did in high school."

Hanks, who is 6 feet tall, looked very lanky in his early films in the 1980s, including "Splash," "Big," and "Turner & Hooch." But in the mid-1990s, when he was heading into his late 30s, Hanks started to fill out (as we all tend to do).

Then in 2000, the actor played a man stranded on a desert island in "Cast Away" and lost an incredible 50 pounds for the role. "All it is is time and discipline," he told Time magazine at the time.

Hear that, modern-day Hanks?