of chips, whole bag -- pound bag of cheese and smother it in ranch dressing. ranch dressing. that would be my breakfast. >> reporter: by 6th grade, natalie weighed 335 pounds. as the weight increased. so would the taunts of classmates. >> i would here tub of lard, i would be mooed at. that hurt. i would be called shamu. if i was swimming at the local pool in the summertime. i was bullied so bad i started being home schooled. and i just -- when i turned 16, dropped out and decided to get my g.e.d. >> reporter: by 17, natalie weighed 560 pounds and had difficulty walking. she couldn't get up off the floor or learn to drive a car because she couldn't fit behind the wheel. >> i missed prom. i missed homecoming. i missed going to football games. >> reporter: finally she decided she missed out on enough. determined to change her life, she joined a weight loss program.