My sister is 15 and she weighs 91 is that normal ?

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How to GAIN weight?

First, determine from the information below, what your weight should be. Then set yourself goals of a week, 2 weeks, a month, 3 months, 6 months and a year. As you see yourself meeting your goals it becomes easier.

BMI (Body Mass Index) is a measurement of body fat based on height and weight that applies to both men and women between the ages of 18 and 65 years.

BMI Classification

18.5 or less Underweight
18.5 to 24.99 Normal Weight
25 to 29.99 Overweight
30 to 34.99 Obesity (Class 1)
35 to 39.99 Obesity (Class 2)
40 or greater Morbid Obesity

Check out your BMI at the bmi calculator site below to see where you stand.

bmi calculator:

http://www.bmi-calculator.net/

If you need conversion info, 1 kg = 2.2 pounds and 2.54 cm = 1 inch (12 inches = 1 foot)

Info if you are trying to GAIN weight:

http://www.bmi-calculator.net/treatment/underweight-treatment.php

Info if you are trying to LOSE weight:

http://www.bmi-calculator.net/treatment/overweight-treatment.php

“How can I Lose 1 pound of body weight per week?”

One pound of body fat is equal to about 3500 calories. So to lose 1 pound of weight per week, you need to eat 500 calories/day LESS than you burn.

But it’s not a good idea to lose weight simply by cutting calories. As well as decreasing calories you should increase your daily physical exercise. This helps to burn calories and build more lean tissue which in turn burns more calories.

“What should a minimum calorie intake be?”

As a guide to minimum calorie intake, the American College of Sports Medicine (ACSM) recommends that calorie levels never drop below 1200 calories per day for women or 1800 calories per day for men. Even these calorie levels are quite low.

http://www.bmi-calculator.net/bmr-calculator/harris-benedict-equation/calorie-intake-to-lose-weight.php

Normal Adult Height-Weight Range Table

http://www.recipehound.com/weight.html

Average Teenager Weight

http://lifestyle.iloveindia.com/lounge/average-teenager-weight-236.html

It seems too skinny. But it really depends on her height if she’s around 5’ 4” - 6’ thats underweight..but it really depends.

dear friend , your sister weight is not normel. in age of 15 she should have a weight of max 65, so tell her to do exercise , and controll on higenic food

no in pounds well she actually she pigs out and she is 4’’11 and she is 15 I’m 12 1/2 and I weigh 91 the same as her its kind of wierd???

Depends on how tall she is and her metabolism… I had a friend who was 18 and 90 pounds, 5’2, but she’s just always been skinny…

depends on how active you are and what you’re trying to be.

the general amount is 2000 I, on the other hand, am supposed to have 1600-1700.

it depends on what you mean…kilos, peunds, ect? if its pounds then no, thes is quite a bit underweight and its not normal, or healthy she possibly might have an eating disorder too especially of shes constantly worrying about food, her weight, and cutting food out of her diet or not eating to try to get thinner but if its kilos then she might be a bit overweight also depending on her height though

at the age of 15 I think thats a bit underweight