Revered comedian Martin Short gives fans a candid look at his life off-screen in Netflix's documentary "Marty, Life is Short."

When you learn what Martin Short has endured in his private life, as captured in the hilarious and heartbreaking documentary "Marty: Life Is Short," the comedian's irrepressibly sunny attitude is all the more astonishing.

“Mental health and cancer… are both diseases,” Short said, “and sometimes with diseases, they are terminal.”