NBC is standing by "Tonight Show" host Jimmy Fallon as rumors about his health continue to surface. The 41-year-old comedian and late night TV personality sparked rumors of a drinking problem late last year after he injured himself three times in the span of four months. 

In November, the New York Post reported that NBC executives were concerned that Fallon's partying and drinking was starting to become "excessive." 

“It’s gone from being a whisper to a chatter,” an insider told the outlet. 

NBC Entertainment Chairman Bob Greenblatt denied the report Wednesday at the Television Critics Association. 

“He doesn’t have a drinking problem that any of us know about," he said (via the Hollywood Reporter). "He goes out and has fun, and he’s had some accidents. Aside from that, he’s in better shape than he’s ever been.”

According to Entertainment Weekly, however, Greenblatt did admit that NBC has some concerns about Fallon's health. 

“We are always worried about his safety and health," he said. "There’s been conversations about that, [but] the stories are exaggerated about all of it. I don’t know to what extent. I haven’t been part of it. I don’t have those conversations with Jimmy Fallon.”

Fallon was forced to step away from "Tonight Show" for almost two weeks last year after he nearly severed his left ring finger at his home. The comedian said he tripped over a braided rug in his kitchen and his ring clipped the counter, almost ripping his finger off. Fallon had to undergo a six-hour surgery and spent 10 days in ICU. 

Just two months after injuring his finger, Fallon had to make an emergency trip to his dentist after chipping his tooth. During a show in August, he explained that he broke his front tooth while trying to open a medication bottle so he could take pills for his injured finger. 

In October, Fallon suffered yet another injury. According to People magazine, he was at a Harvard Lampoon event and fell while holding a bottle of Jägermeister. He was treated at Massachusetts General Hospital in Boston and later returned to the event.