The Fahrenheit 9/11 director has revealed he was hospitalised on Sunday (31Jan16), and has spent the week under the care of doctors.

Moore has cancelled all his upcoming work commitments, and is hoping to be discharged before the weekend (06-07Feb16) so he can continue his recovery at home.

"I'm writing this to all of you... from the Intensive Care Unit at a hospital in New York City," he writes in a message posted on on Friday (05Feb16). "Unfortunately, I've come down with pneumonia. Between running all over the place lately promoting my new movie... plus going to Flint to help the people of my hometown (deal with a dirty water crisis)... You can't burn it at both ends, and if u (you) do, it's best not to do so in the winter nor anywhere near a place full of toxic water!

"The truth is, I've actually been in the ICU since Sunday night. Let's just say things didn't look good Sunday night. But thanks to a combination of good doctors, decent hospital food and 2nd-term Obamacare, I'm doing much better the last couple of days - so much so that I'm being discharged... I'm to return home and rest for the coming days. All appearances for the rest of this week have been canceled."

Moore fears his hospitalisation will affect promotion efforts for his new film, Where to Invade Next, and he wants fans to help him out by sharing information about the movie on social media.

"With my absence this week (and probably into next), I'm now worried about my film's release," he adds. "I can't fly, I have to recover, and in one week... this great movie... is going to open in theaters - with little or no assistance from me. So, would it be OK to enlist your help in a sort of quickly cobbled-together 'army' of grassroots foot soldiers, wherein you could pitch in where you live (and on social media) to let people know about my movie?..

"I know this seems a bit unorthodox... but this is the age of social media and we're all trying lots of new ways to do things, aren't we?... This will take a HUGE burden off me and give the movie a chance to be seen by millions."