brittney takes us to louisiana where a community weight program has a 100% success rate. >> reporter: this is home to 37-year-old karla and her family. her heart is in the mission that she participates in as friendship volunteer. last year, a lingering health issue began impacting her service. >> i got to my largest weight ever. i didn't feel like i could do my job, physically, i was starting to have problems. >> reporter: at 271 pounds, she enrolled in the community clinic weight management program. >> for a long time, i knew i needed to do something about my weight. i just didn't know what to do. >> reporter: she was in good hands with linda jones who had her own weight battle before dropping over 70 pounds. >> our mission is there are no true diets, they are lifestyle changes. we help you make healthy lifestyle choices. >> reporter: unhealthy choices aren't just bad for the person making them, but the economy as well. >> 25% of health care costs are spent treating diseases from being overweight. >> reporter: since the weight program kicked off in february, 100% of the 30 participan