Tonight Show host Jay Leno has been hospitalized.

NBC confirmed the news, saying that Leno had checked himself into the Burbank, California hospital because “he wasn’t feeling well.” Taping for tonight’s show was canceled, and NBC will instead air a repeat.

Some reports are suggesting that Leno may be suffering from food poisoning, although NBC reps said this wasn’t the case. The same reps said that Leno is “in good spirits” and had been joking with staff at the hospital.

The missing part is when do people check themselves into hospital because they “aren’t feeling well?” Sounds like Leno could have other issues, perhaps not related to this illness, but issues that would prompt a hospital visit versus a simple visit to a local doctor.