Fans of 30 Rock may have noticed that Grizzwald Chapman, who plays Tracy Jordan's co-hort Grizz, had lost some weight this season. That's because he has severe hypertension and needs to lose 75 pounds before doctors will consider him for a kidney transplant, which he desperately needs (he's 6 feet 11 but weighs 378 pounds). He has ignored his high blood pressure for many years and now goes through dialysis three times a week. He might even have to wait as long as five years to get a new kidney.

On tomorrow's Dr. Oz Show, Chapman appears (along with Kevin Brown, who plays DotCom on 30 Rock) to talk about his trouble. He has use of only 5% of his kidney right now. Oz is going to help Chapman stay healthy until a kidney becomes available.

Here's hoping he gets on the right track and everything turns out OK.