The former "Cheers" star told the New York Post his estrangement began when he was "going through a lot of self-doubt; self-loathing,” and "drinking a lot."

Danson previously apologized to Grammer for 30 years of 'missed' friendhipSounds like Kelsey Grammer and Ted Danson have much to Cheers about.In October, Danson hosted Grammer on his Where Everybody Knows Your Name podcast with Woody Harrelson and apologized to the Frasier star for "getting angry" at him once during their Cheers years,

Kelsey Grammer recently revealed to the New York Post the reason why he had a 30-year falling out with “Cheers” co-star Ted Danson. The two actors appeared on a podcast last October where Danson apologized to Grammer for an incident on the “Cheers” set that resulted in them not speaking for three decades.