I don't think it sounds good. I am 5'2 and weigh 105. you certainly could use some weight. I would recommend seeing a doctor. Do you eat the way you should? Maybe you just have a super charged metabolism and need extra help. Talk to your parents and have them take you to your family doc.
Puberty plays a big part in this also. Right about this age a LOT of kids will dramatically change, whether it be big growth spurts, weight gain, loss, etc. Something big could be right around the corner...If you are concerned, make a doctor appointment and ask. I don't think being "under-weight" is too much of a problem in today's society as long as you are getting the proper nutrition. Lots of fruits, veggies, whole grains, keep away from the sugary snacks, pop and candy if at all possible.
The "fat stomach" part concerns me. If you don't eat enough, your stomach becomes injured from its own acids and will begin to swell. I think you should concentrate on avoiding hunger instead of on how much you weigh. The weight issue is probably not a big deal since young people go through a lot of changes. But make sure that you're consuming enough good food to build muscle and to grow, in addition to maintaining your good health. Good luck to you.
It really depends on your bone structure and gender. Prepubescent teens are also typically on the lighter side. Most will round out during puberty and throughout the teen years if they are eating healthfully.
You may want to talk with your parents/guardians about it. A trip to the doctor will help determine your ideal size for your frame, height and gender. If you are determined to be underweight a referral to a nutritionist will most likely be given and/or possible medical causes will be ruled out.
I have a sister-in-law who eats like a horse and is about the same size as you are (she's 20 and has been a "twig" her whole life ). She weight-lifts, jogs, does tae kwon do and she just turns into a firmer twig . Yet her sister is the same height and weighs 160 (they do their weight training, jogging and tae kwon do together) and doesn't look overweight or unhealthy. Both are beautiful healthy young gals.
As for males my husband can also eat enormous amounts of food but when we were first married at 5' 10" he weighed only 130lbs. (20 yrs. old). That was 10 years ago and he now weighs around 160 (he weight lifts and still looks very lean). His older brother is considerably shorter and weighs...ahem...considerably more yet he eats less.
So anyway, don't stress too much. Focus on eating a healthful diet, get a check-up and avoid being sedentary.
The Body Mass Index should only be used for individuals over the age of 18. To assess height and weight for youth and children, a growth chart must be used.
I plotted your height and weight on a clinical growth chart for Boys 2-20 published by the National Centre for Chronic Disease Prevention and Health Promotion. At 14 years of age, 45 kg and 165 cm you are at the 50th percentile for stature (height) and 25th percentile for weight. This means that you are basically average height and are slightly below average for your weight.
I wouldn't worry too much for your weight. Just make sure that you eat healthy and you will gain weight as you grow and go through puberty.
I hope this helps!
Last edited by tdot; 03-24-2005 at 10:22 AM.