Roxborough's Jennifer Ott knew she had to give up her carb-aholic ways when her doctor told her she was making a beeline toward diabetes. “My doctor was very concerned because I have diabetes in my family and I was heading in that direction,” says the 35-year-old hairstylist, who started having problems with her weight right after graduating from Haverford High School. Thanks to the urging of one of her clients, Ott decided to give Weight Watchers a try. At the same time, she started running, using 5K and 8K races as motivation. Now, she's down from a size 14/16 to a size 6/8, runs 10 to 15 miles a week, and even competed in last year's Broad Street Run. Her next goal: a half marathon.