Tom Arnold on losing 100 pounds: My son saved my life

HOLLYWOOD, CA - FEBRUARY 15: Actor Tom Arnold attends The Annual Make-Up Artists And Hair Stylists Guild Awards at Paramount Theater on the Paramount Studios lot on February 15, 2014 in Hollywood, California. (Photo by Jason Kempin/Getty Images) Jason Kempin / Getty Images

The comedian and actor writes about reaching his year-long goal of losing 100 pounds.

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