Almost everyone has a weighing scales at home for regularly monitoring their weight. The majority of people want to lose weight, although others are trying as best they can to gain weight. According to nutritionists, body mass index (BMI) can tell you whether your weight is normal, too high or too low. This calculation can be used as a reference, based on which you can adapt your diet. So what is your BMI, and what does it mean?
1) Calculate your BMI
The World Health Organisation has been using body mass index, BMI, since 1997, in order to establish a global classification system in terms of body weight, which can be used the world over. The main goal of this classification system is to evaluate the risks related to being overweight.
BMI is calculated in kilograms per meter squared (kg/m²). This is the formula:
BMI = weight in kilograms / (height in meters)²
A woman measuring 1 m 65 and weighing 55 kg has a BMI of 20.2 kg per m², and thus has a normal body weight, because her BMI falls between 18.5 and 25 kg/m².
2) What does your BMI mean?
BMI less than 16:
- Anorexia or malnutrition
BMI less than 18.5:
- Average weight for a height of 1 m 70: less than 53 kg
BMI of 18.5 to 24.9:
- Normal or ideal body weight
- Average weight for a height of 1 m 70: from 53 to 72 kg
BMI of 25 to 29.5:
- Overweight (with increased health risks)
- Average weight for a height of 1 m 70: 72 to 86 kg
BMI of 30 to 34.9:
- Class 1 obesity -moderate (with serious health risks)
- Average weight for a height of 1 m 70: 87 to 101 kg
BMI of 35 to 39.9:
- Class 2 obesity -severe (with very serious health risks)
- Average weight for a height of 1 m 70: 101 to 116 kg
BMI over 40:
- Class 3 obesity -very severe (with very serious health risks)
- Average weight for a height of 1 m 70: over 116 kg
The higher the BMI, the higher the risk of suffering from cardiovascular illness, pulmonary illness or joint problems.