If you are underweight (BMI less than 18.5kg/m2), you may be malnourished and develop: compromised immune function. respiratory disease. digestive diseases.
Can you be healthy with a low BMI?
If your BMI is less than 18.5, it falls within the underweight range. If your BMI is 18.5 to 24.9, it falls within the normal or Healthy Weight range. If your BMI is 25.0 to 29.9, it falls within the overweight range. If your BMI is 30.0 or higher, it falls within the obese range.
How bad is a low BMI?
Weighing too little can contribute to a weakened immune system, fragile bones and feeling tired. You can check if you’re underweight by using our BMI healthy weight calculator, which shows your body mass index (BMI). If your BMI is below 18.5, this suggests that your weight may be too low.
Is a BMI of 17.5 too low?
The American Dietetic Association (ADA) defines the ideal body mass index (BMI) as between 20 and 25. Thus, anyone below that range would be considered underweight and those with a BMI from 18.5 to 17.5 extremely underweight.
What BMI is severely underweight?
BMI is not a perfect system for measuring body fat, however in most cases BMI is reliable and gives a fair indication of body fat levels.
|Less than 15||Very severely underweight|
|Between 15 and 16||Severely underweight|
|Between 16 and 18.5||Underweight|
|Between 18.5 and 25||Healthy weight|
How do I know my ideal weight?
Here are general guidelines.
- If your BMI is less than 18.5, it falls within the “underweight” range.
- If your BMI is 18.5 to 24.9, it falls within the “normal” or Healthy Weight range.
- If your BMI is 25.0 to 29.9, it falls within the “overweight” range.
- If your BMI is 30.0 or higher, it falls within the “obese” range.
What weight should I be at 6ft?
Weight and height guide chart
|5ft 10″ (70″)||132 to 167 lbs.||174 to 202 lbs.|
|5ft 11″ (71″)||136 to 172 lbs.||179 to 208 lbs.|
|6ft (72″)||140 to 177 lbs.||184 to 213 lbs.|
|6ft 1″ (73″)||144 to 182 lbs.||189 to 219 lbs.|
At what BMI do anorexics get hospitalized?
One Place for Treatment
Admission criteria require that patients be less than 70 percent of their ideal body weight, or have a body mass index (BMI) below 15. In a woman who is 5 feet 4 inches tall, that’s about 85 pounds.
What low BMI is fatal?
In males, a BMI of around 13 appears to be fatal. The coefficient of variation (CV) of the BMI is 8.7%. In contrast, females survive to a lower BMI of around 11, although with greater index variability (CV 14%). Several females had BMI’s as low as 9 and 10.
What BMI is most attractive?
These studies have found that a low waist to hip ratio (WHR) of approximately 0.7  and a low Body Mass Index (BMI; weight scaled for height) of approximately 18–19 kg/m2  are perceived as most attractive in female bodies, while a low waist to chest ratio (WCR) of approximately 0.7, and relatively high BMI ( …
At what BMI do you get hospitalized?
BMI < 13 is an indicatior for certification under the Mental Health Act if the patient refuses admission although BMI < 13 alone is not enough for admission.
How much should a 13 year old weigh?
How Much Should My 13-Year-Old Weigh? The average weight for a 13-year-old boy is between 75 and 145 pounds, while the average weight for a 13-year-old girl is between 76 and 148 pounds. For boys, the 50th percentile of weight is 100 pounds. For girls, the 50th percentile is 101 pounds.
What is a low BMI for a woman?
Women with a BMI of less than 18.5 are considered underweight. The average woman’s height is 5 feet, 4 inches. If you weigh 107 pounds or less at this height, you are considered underweight with a BMI of 18.4. A healthy weight range for that woman would be 108 to 145 pounds.
What weight is too skinny?
For adults, a BMI under 18.5 is considered dangerously thin, 18.5-25 is the healthy weight range, 25-30 is overweight, and 30 or over is obese.
What BMI is considered skinny?
Your body mass index, or BMI, is the relationship between your weight and your height. A BMI of 20-25 is ideal; 25-30 is overweight and over 30 is obese. If your BMI is under 18.5, you’re considered underweight. If your BMI is 18.5-20, you’re a bit underweight and can’t afford to lose more.
What is dangerously underweight?
Underweight: less than 18.5. Normal/healthy weight: 18.5 to 24.9. Overweight: 25.0 to 29.9. Obese: 30 or higher.