The Eating Disorder Awareness and Education Fund of the Southwest Florida Community Foundation holds a forum Tuesday night at 7 at Harborside Convention Center in downtown Fort Myers. School counselors, nurses, health class instructors and coaches and the public are invited. It’s estimated that between 10 and 20 million women and one million men in the U.S. are afflicted with eating disorders. One of the women is 15-year-old Brenna. She’s a sophomore at Fort Myers High School who runs cross-country for fun. Brenna has anorexia. And this spring she received treatment in Arizona – at one of the country’s foremost treatment centers for women with anorexia. There, she was required to write about the disease.