His death was confirmed by his family Thursday who said, he "passed away peacefully in New York surrounded by family and friends."

His brother Craig Spurlock added, "It was a sad day, as we said goodbye to my brother Morgan. Morgan gave so much through his art, ideas and generosity."

Craig -- who had teamed up with Morgan on a bunch of docs like "Morgan Spurlock Inside Man" and "7 Deadly Sins" -- also said, "Today the world has lost a true creative genius and a special man. I am so proud to have worked together with him."

Morgan had been undergoing chemotherapy treatment earlier this year.

He was most famous for his Oscar-nominated 2004 feature, "Super Size Me" ... where he captured his psychological and physical symptoms from eating McDonald’s every day for a month.

Some of his other works included "Where In the World Is Osama Bin Laden?," "Mansome,"  and "The Greatest Movie Ever Sold."

He leaves behind a loving family, including his two sons, Laken and Kallen, his mom Phyllis, dad Ben, and his brothers Craig and Barry.

Morgan was 53.