# Body mass index

Scientists and medics developed a special formula called Body Mass Index (BMI). BMI calculates to what extent the body proportion corresponds to biological norm.

BMI body mass index is calculated by the following formula - BMI = m / h2, where m - body mass is in kilograms and h – height in meters

In order to calculate your body mass index, you must specify the height and weight in corresponding fields.

Results are following:

• If BMI is less than 16, body has a large deficit of body mass.
• From 16 to 18,5 indicates body mass deficit (underweight);
• From 18,5 to 25 BMI person has normal weight;
• From 25 to 30 BMI indicates excess weight (overweight);
• 30 or above BMI indicates obesity

Moreover, scientists distinguish three degrees of obesity. In particular:

1. Body mass index of 30-35 indicates first degree of obesity.

2. Body mass index of 35-40 indicates second degree of obesity.

3. If body mass index is over 40,  third degree of obesity, i.e morbid (morbid –disease, pathology) obesity is declared.

Obesity is an accumulation of excess fat in the body that threatens health. According to the World Health Organization, world obesity indicator has doubled since 1980.

However, many people forget that body mass deficit (when person’s weight is less it is recommended, normal –dangerous, excessive thinness) is as threatening to health as excess weight.

Wish you health!