Tom Hanks appeared on Late Night With David Letterman last night to promote his upcoming film Captain Phillips and revealed some personal health news that was certainly unexpected. After David commented that the actor was looking noticeably thinner than before, Tom said it was all done for his health.

Tom explained that he’s been dealing with high blood sugar numbers since the age of 36 and his doctor said to him, “You’ve graduated. You’ve got type 2 diabetes, young man.”

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He continued, “My doctor said, ‘Look, if you can weigh as much as you weighed in high school, you will essentially be completely healthy and not have type 2 diabetes.’ And I said to her, ‘Well, I’m gonna have type 2 diabetes.’” Since Tom joked that he was only 98 pounds when he was in high school and it was kind of impossible for him to get back to that weight, living a healthy lifestyle was his best possible option.

Living with this new health news isn’t exactly slowing Tom down. His film Captain Phillips is already receiving Oscar buzz. The film, where he plays a captain of a ship that gets taken over by pirates, hits theaters this Friday.

Another celebrity who has been open about his battle with diabetes is Nick Jonas, who suffers from the most common type among younger people, type 1 diabetes.

Were you surprised by Tom’s health announcement?