Fallon had a number of accidents last year, including a finger injury and a chipped tooth.

After a panel, NBC entertainment chairman Bob Greenblatt was asked if Fallon had a drinking problem.

"He doesn't have a drinking problem that any of us know about," Greenblatt said. "He goes out and has fun and he's had some accidents. We are always worried about his safety and health and yeah, there's been conversations about that, (but) the stories are exaggerated about all of it."