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Doctor insights on: Bmi Underweight Unhealthy

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Dr. Cornelius O'leary jr
543 doctors shared insights

Body Mass Index (Definition)

Body mass index (BMI) is a measurement based on a person's height and weight, to decide if a person is too heavy or too light for his height. The index is a number that can be in the underweight range, normal range, overweight range, or obese range. Children use different number ranges than adults do, ...Read more


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Im underweight my bmi: 16, tried everything but cant gain kgs, don't hve any disease, can you tell me hw to gain weight?

Im underweight my bmi: 16, tried everything but cant gain kgs, don't hve any disease, can you tell me hw to gain weight?

Can be hard: To gain weight, just like for more individuals the opposite is true in regards to weight loss. Assuming your doctor has ruled any disease like thyroid or malabsorption issues, it will come down to a balancing act of consuming more calories than your burn(need more in than "out"). This can require strict monitoring of the caloric content of your food and activity levels. ...Read more

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What is defined as an underweight BMI for kids?

Talk to MD: Your pediatrician is the best one to answer this question for the simple reason that they have been tracking your child for a while. The child should remain fairly stable on the growth chart. All children vary in shape and size, some of it is from genetics and some of it is from nutrition. Talk to your md. ...Read more

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I'm underweight, my BMI is 18.6, what shall i do?

I'm underweight, my BMI is 18.6, what shall i do?

Slowly gain: Eat a health diet with some increased carbohydrates. Be sure to eat balanced meals and stay healthy with exercise as well, so you do not get fat, yet your weight slowly rises to a weight you are comfortable with. It is best to discuss with your dr. And parents, so the dr. Can provide support and diet advice and your parents can help as well. Best wishes. ...Read more

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Why might I look fat if my BMI says i'm underweight?

Two issues: Bmi is an estimate dependent on a fudge factor that assumes bone structure & muscle mass are consistent along all body types.It can be off some. To verify bmi assessment, plotting height & weight along standardized growth charts (cdc or who) gives a better graphic representation of proper weight for height. If you are underweight by both systems, your brain may be giving you a distorted self image. ...Read more

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Hoping you can tell me, is BMI of 15.9 too underweight?

If your BMI is: 15.9 and you're a female who is about 5 feet tall, your weight would have to be about 80 pounds -- which would be considered very, very thin and probably unhealthy. Are we talking about someone with an eating disorder who needs psychiatric help? ...Read more

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My BMI indicates that I am underweight (bmi is 18.02) should I gain weight?

My BMI indicates that I am underweight (bmi is 18.02) should I gain weight?

You're not a number: The BMI was never intended for use by individuals. If you feel well, are athletic, & keep up with peers at fitness activities, you have no reason to change. Elite track athletes have BMI's like yours. And don't try to gain by eating to gain fat -- a man needs no body fat and a woman needs only a little. Exercise regularly, handle any health issues with your physician's help & weight self-solves. ...Read more

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Bmi (Definition)

Bmi or body mass index is how we define if a person is under or overweight. It is calculated my taking your height in meters and dividing it by your weight in kilograms squared. Or using a bmi calculator. A normal weight is a bmi between 18-25. Obese is a ...Read more