How much should a healthy fourteen-year-old weigh?

Search The Net For ( BMI ) Body Mass Index, Fill In The Blanks Do The Math. But Talk To Your Family Doctor First He Can Answer This Best !!!!!!!!!!!!!! BE SURE TO VISIT YOUR DOCTOR REGUARDLESS OF THE BMI READING OK ? I agree, you should check you BMI, but that's not fool proof. I depends on your structure. Check with your doctor. My daughter just turned 15 and weighs only 97 pounds. She is healthy and very active. Her doctor wants her to go for another weight check in 1 month, just to keep on top of it. She has a high metabolism, as do you most likely.