Moore showed 20 minutes of the film Friday at the Toronto Film Festival.
Variety said two of the clips included interviews with U.S. citizens who described unsatisfactory experiences with the U.S. health care system. The third featured an account of a Norwegian island used as a free-range prison for rapists and murderers, and went on to assert that Norway had the developed world's lowest murder rate.
"I think you can judge a society by how well it treats its least," Moore says in a voiceover. "Americans, we're filled with anger and revenge and beating up on those who have it the hardest. These issues won't change until we change who we are at our core."
"Sicko" is set to be released by the Weinstein Co. next June, Variety said.