text: i am 89 lbs and i feel fat and look fat i am 16 years old why do i feel fat am i fat or what?   if you're of average height for your age, you're not fat. you're probably in very nice shape!  however, what other people think or tell you won't change your mental image.  part of what makes you feel that way is that your body is changing from that of a girl to that of a woman.  you're getting curves in all the right places, and developing a figure.  it's a great thing, but it may take time to get comfortable with getting, like..old, gurl ;-)  if your weight is becoming an obsession, where you feel that you have to lose weight to look "good", then you should probably talk to an adult about it.  if you don't feel that you can talk to your parents, then maybe an adult friend, a school counselor...  if the feeling continues, it can lead to anorexia, bulimia, and all the complications that result from those - even death.