Morgan Spurlock, the documentarian behind "Super Size Me," has passed away from cancer. He was 53.

"It was a sad day, as we said goodbye to my brother Morgan," his brother Craig Spurlock told Variety. 

"Morgan gave so much through his art, ideas and generosity. Today the world has lost a true creative genius and a special man. I am so proud to have worked together with him."

Morgan Spurlock ate at McDonald's for a month as the director of "Super Size Me." (Randall Michelson/WireImage/Getty Images)

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The Associated Press contributed to this report.