The average healthy weight for a 14-year old girl is 105 pounds. Every teenager is different and this should only be used as a guide.
Children and teenagers go through growth spurts several times during their early lives. They may gain and lose weight rapidly and the changes seem to be more drastic in girls than in boys. They can seem to add inches to their height overnight, and they will experience changes in body fat distribution, weight and bone composition. If parents have a concern regarding their child's weight or rate of growth, they should contact their child's doctor who will use a medically-based growth chart to help diagnose any growth-related problems.