When our body, for whatever reason, accumulates fat abnormally, with the consequent risk to our physical and mental health, it is commonly said that we are out of weight. In moderate degrees it is called overweight, in which case the World Health Organization (WHO) establishes that we have a low risk of suffering from diseases associated with this state. At high or very high levels it is called obesity and it is considered to be a disease with different degrees of severity.
Let understand the Body mass index or BMI
BMI can be calculated by the mass of of a person divided by the square of height and is expressed in the units of kg/m2.
To establish the aforementioned classifications, the World Health Organization WHO uses different indicators. Since the 1980s, the most relevant is the BMI, a simple calculation that establishes the appropriate relationship between the weight and height of an individual. The advantage of this method with respect to the tables of ideal weight is that it is more global, since the results do not take into account neither sex nor age in the adult population; however, the World Health Organization WHO cautions that this is a rough guide.
How calculate Body Mass Index or BMI
To know our BMI we must divide our weight by height, expressed in meters, squared (kg / m2). Let's see the example of a person who weighs 70 kg and measures 1.7 m:
height squared= 1.7 x 1.7 = 2.89
Now
weight divide by height squared = 70 / 2.89 = 24.22 (BMI)
For the WHO, being overweight is equivalent to a BMI that is equal to or greater than 25 and determines that obesity is rooted in values equal to or greater than 30. It is just as dire to weigh more as to do less. Therefore, from the BMI indices, the World Health Organization (WHO) establishes the following table.
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