Underweight, bmi calculator child

Underweight, like overweight, can be very dangerous. The BMI (Body Mass Index) is the most common index used by doctors to determine underweight. Here you can find out immediately what exactly underweight is, what consequences underweight has, whether you or your children have dangerous underweight and what exactly you can do about it.

Underweight definition

Underweight is defined as an average body weight with an increased mortality and disease risk. According to the standards of the World Health Organization WHO, adults over the age of 19 are considered underweight if their BMI (Body Mass Index) is below 18.5. The following BMI table shows the delimitation of the individual weight categories:

WHO BMI table for adults

Underweight is dependent on gender?

The gender-independent determination of the weight categories according to BMI values ​​ignores the natural differences between men and women:

1. Women have a higher percentage of body fat than men.
2. Women have a lower water content than men
3. Men have a larger proportion of muscle mass than total body weight.
4. Men usually have a heavier bone structure than women in relation to the total weight.
5. Men of the same height are usually heavier than women.
6. In children, the normal body fat percentage changes almost permanently with growth, depending on age and gender. Different BMI tables therefore apply to children.

For these reasons, women with a smaller BMI are classified as underweight and overweight than men.

BMI table underweight man woman

The following BMI table for shows the influence of age and gender on the BMI table of adult women and men:

Underweight in children

According to the World Health Organization (WHO), in 2013 around 17% of children under the age of 5 (98 million) in developing countries were underweight. In South Asia, the proportion was sometimes as high as 30%.

Are in Germany 5% the 3 to 6 year old and 05.09% of 11- to 13-year-old children and adolescents underweight (2008). 22% of 11- to 17-year-old children and adolescents apparently show signs of an eating disorder as a result of the "slimming craze" (2003-2006). Girls are affected almost twice as often as boys. Slightly underweight is usually no reason to panic, especially if it is not a permanent condition or children are in the stretching phase of length growth due to development. Serious consequences usually only occur with a heavy underweight.

Underweight characteristics and consequences

Light underweight need not lead to health risks in every individual case. For some people with a special genetic predisposition, light underweight is normal, while normal weight in the upper range can already lead to health risks for such people.

Heavy underweight – identifying features and consequences:

• inefficiency
• Circulatory disorders
• difficulty concentrating
• Depression
• Fatigue despite having enough sleep
• stunted growth
• Decreased intellectual development
• Menstrual, erectile dysfunction and fertility problems (menstrual periods do not occur for several months)
• Strongly protruding pelvic bones
• Osteoporosis / spontaneous fractures that are difficult to heal
• A strongly emerging chest
• Matt and brittle hair until hair loss
• Defect symptoms of all kinds
• Immune system disorders, increased susceptibility to infections
• Bad wound healing
• Frequent freezing
• Dry skin
• nutritional edema

The most common method of determining underweight is the BMI.

BMI calculator

1. With the BMI calculator shown here, you can use the BMI immediately to calculate.
2. Now compare the BMI with the age and gender-dependent BMI tables shown above for adults or below for children (0 to 19 years).
3. This way you can immediately see whether you or your children are underweight or even heavily underweight.

BMI table underweight girls 0-19 years WHO

The following BMI table shows you the BMI range for underweight a girl from birth to the age of 19 at intervals of half a year.

With the search field at the top right above the table, you can only display the underweight BMI for a certain age. For example, if you enter “J12” in the search field, the BMI table will only show you the BMI (underweight) of a 10-year-old girl.

With the field in the top left above the table “show entries”You can choose how many entries the table should display.

BMI table underweight boys 0-19 years WHO

The following BMI table shows you the BMI range for underweight a boy from birth to the age of 19 at intervals of half year.

With the search field at the top right above the table, you can only display the underweight BMI for a certain age. For example, if you enter “J7” in the search field, the BMI table will only show you the BMI (underweight) of a 7-year-old girl.

With the field in the top left above the table “show entries”You can choose how many entries the table should display.

What to do if you are underweight?

In cases of severe underweight, you should definitely have one doctor attention. If your much too thin daughter or heavily underweight son only appears apathetic, speaks in a low voice and starts to cry in the smallest of arguments, you should immediately consult a doctor to rule out the life-threatening consequences of being underweight (anorexia).

Otherwise, it is helpful to solve psychological blockages and to find a natural eating behavior based on healthy whole foods that are rich in minerals, proteins and vitamins.

Beware of stuffing mountains of chocolate, fast food or low-quality fats in yourself or the children. Food intake should be spread over 6 or more meals. The calorie intake should be at least 20% above the daily calorie requirement. Delicious herbs and spices, varied food and bright natural colors stimulate your appetite.

The goal should be to quickly reach the threshold to normal weight or – even better – to ideal weight. It is important not to overwhelm yourself, but also not to overwhelm yourself. The recipe for success is: Step by step in the right direction.

With the BMI calculator linked below, you can calculate the individual normal weight and the ideal weight for each age and both genders. This gives you a clear orientation about your path towards a life of the highest quality of life. The links to the interactive BMI tables show you all limit values ​​for the 5 weight categories listed above for all ages:

• BMI calculator for women (19-99 + years)
  BMI calculator for men man (19-99 + years)
  BMI calculator for teenagers (teenagers: 19-13 years)
• BMI calculator for children (12-6 years)
  BMI calculator toddlers (6-1 years)
  BMI calculator baby (1-0 year)
• BMI calculator for amputation
  (Calculate BMI if limbs are missing)

If you liked the article "Underweight" or even helped, then we look forward to your recommendation to friends, relatives and acquaintances. Simply use the buttons docked to the right of the page. We also welcome comments and questions about underweight.

Thank you and good luck on the way to your ideal weight.

Note: Remember that the BMI is a statistical quantity. It does not apply to every individual case. They are always averages. Therefore, you should secure your BMI result and if in doubt consult a doctor (see terms of use).

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