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Doctor insights on: How Dangerous Is A Bmi Of Under 15

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How dangerous is a BMI of under 15?

How dangerous is a BMI of under 15?

Low bmi: Make sure the calculation is correct first, but that is a dangerously low bmi and needs to be addressed by a physician. ...Read more

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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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My friend is 28, 5'1 and has a BMI of 15. Is this dangerous for her? As she is worried.

My friend is 28, 5'1 and has a BMI of 15. Is this dangerous for her? As she is worried.

Yes: To achieve this bmi, she would have to weigh about 80 pounds, which could easily be harmful. Has she ever been evaluated for an eating disorder or chronic medical problems? ...Read more

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I went from have a bmi of 18.2 to 15.99 in six months. I'm 20 years old and I'm 5'6. I have tons of health issues, could this relate? How dangerous?

I went from have a bmi of 18.2 to 15.99 in six months. I'm 20 years old and I'm 5'6. I have tons of health issues, could this relate? How dangerous?

Need to see doctor.: I usually like to provide concrete answers to questions here, but your query requires some definitive testing. There could be many metabolic, infectious, nutritional, gastrointestinal, endocrine issues causing the problem with your weight. Your BMI is dangerously low. You need to initiate a local work-up with a doctor right away. Please. ...Read more

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My BMI went up from 19 to 23 in 6 month (gained a lot of weight). What should be my main concerns, it that dangerous ?

Keep track: Your weight is still "normal" per bmi criteria. You need to start keeping track of what you are doing. Are you consuming more calories than you are expending? Was you recently inactive for some reasons? Was u started on a new meditations? If nothing new had changed, then see your doctor for an evaluation. Good luck. ...Read more

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Can you please explain why a low BMI is dangerous if you aren't starving yourself?

Why is it low?: The main concern that I would have would be the reason why it's low. It may not just be low because it's the way you are. There may be something medical going on that's causing unnecessary weight loss, especially in someone of your age. This should be evaluated. ...Read more

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My friend is 6'1" and 110 pounds, with a BMI of 14.5, runs 3 miles per day along with Yoga. Is he headed down a dangerous path?

My friend is 6'1" and 110 pounds, with a BMI of 14.5, runs 3 miles per day along with Yoga. Is he headed down a dangerous path?

Sounds good: "Body mass index" was never intended to be applied to individuals, though in non-athletes it is a crude measure of obesity / malnutrition. If your friend is light-framed and has this level of athleticism, stop worrying and be glad for his good health. The stuff about "low BMI people die sooner" just reflects the high mortality of cancer patients, deteriorated alcoholics and so forth. ...Read more

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I am an 18-year-old female but my blood pressure is always 92/57-60. My BMI is 24.2. It is naturally occurring (no meds). Is it dangerous?

Low BP?: 18 F BMI 24.2 worries about BP 92/57. No worries. In general the lower your BP and BMI the longer you will live and the less time you will spend during your later years living with the consequences of higher BP: stroke, heart attach, heart failure, kidney failure and aortic aneurysm. Keep up the good work The only low BP to worry about is if you faint when it gets low for you. ...Read more

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When I suffered from anorexia bmi of 12 I got a very dangerous arithmia that jumps your heart rate from low to high. What is it called?

When I suffered from anorexia bmi of 12 I got a very dangerous arithmia that jumps your heart rate from low to high. What is it called?

Tachycardia: Increased heart rate with regular heart beats is tachycardia , in some cases the beats are irregular and or abnormal and that is classified as an arrhythmia. Increased rate is called tachyarrthymia. Hope this helps what you are looking for. ...Read more

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