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.

Is a BMI of 17 overweight?

A BMI between 25 to 29.9 is considered overweight. Anything over 30 is considered obese. Normal BMI is between 18.5 and 24.9.

What is the lowest BMI possible?

The lowest BMI recorded was 7.5 (she was only 21 inches tall and died of hypothermia), highest BMIs are around 188 [Guinness World Book of Records]. I am using BMI instead of weight because of course height factors into how much we can and do weigh.

What happens when BMI is too low?

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.

What is a dangerously low body weight?

Underweight: less than 18.5. Normal/healthy weight: 18.5 to 24.9. Overweight: 25.0 to 29.9. Obese: 30 or higher.

What BMI doesn't tell you about your health

18 related questions found

Is BMI of 18 good?

BMI ranges

below 18.5 – you're in the underweight range. between 18.5 and 24.9 – you're in the healthy weight range. between 25 and 29.9 – you're in the overweight range.

At what BMI can you be hospitalized?

for hospitalization:

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.

At what BMI do you see abs?

NSCA-certified personal trainer, chiropractor, and owner of Movement Upgraded Ryan Hosler said that for men, if you're around six to 17 percent body fat, your abs should be noticeably visible. For women, the range is 14 to 24 percent body fat.

Is a BMI of 17 bad?

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.

At what weight do your organs start shutting down?

There are also different tiers of anorexia based on BMI ranging from mild (<17.5), moderate (16-16.99), and severe (15-15.99), to extreme (<15). A BMI below 13.5 can lead to organ failure, while a BMI below 12 can be life-threatening.

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. OK, have you ranked them?

Is it OK to be slightly underweight?

Approximately 1.7 percent of the American adult population is underweight, according to the 2011–2012 National Health and Nutrition Examination Survey. ... As long as you're eating a balanced diet, getting all the nutrients and calories you need, and you have adequate energy, being slightly underweight might be OK for you.

Is being underweight or overweight worse?

Study: Underweight People Have a Greater Risk of Death Than Obese People. A new study finds that clinically underweight people have almost twice the risk of death, compared to obese individuals. You can't be too rich or too thin, right? Too rich, yes, but, when it comes to being too thin, maybe not.

Is a BMI of 16 bad?

Levels of severity

Mild: BMI of greater than 17. Moderate: BMI of 16–16.99. Severe: BMI of 15–15.99. Extreme: BMI of less than 15.

Can you miss your period if you're underweight?

If you're underweight, it can also affect how your hormones work. This means your periods could be delayed if they have not started yet or, if they have started, you could miss some.

What is amenorrhoea?

Amenorrhea (uh-men-o-REE-uh) is the absence of menstruation, often defined as missing one or more menstrual periods. Primary amenorrhea refers to the absence of menstruation in someone who has not had a period by age 15.

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.

At what BMI should anorexics get hospitalized?

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 is acute anorexia?

What is Acute Anorexia Nervosa? Acute anorexia nervosa (AN) is anorexia in its most severe stage. Patients with acute anorexia nervosa have a BMI of less than 15 (i.e., less than 65 percent of their ideal body weight) and meet the DSM-5 diagnostic criteria for anorexia nervosa [1].

Is BMI 18 too low?

A BMI between 18 and 25 is considered healthy; less than 18 is classed as underweight, between 25 and 30 and you are overweight, while a score of more than 30 makes you obese.

How do I know if Im underweight?

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 are the signs of being underweight?

Physical signs

• Sudden or rapid weight loss (over a stone in less than a month)
• Feeling tired all the time.
• Frequent changes in weight.
• Struggling to concentrate.
• Feeling unwell after meals.
• Loss of appetite.
• Feeling cold all the time (even in warm environments)
• Thinning or loss of hair.