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BMI Formula:
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BMI (Body Mass Index) is a simple index of weight-for-height that is commonly used to classify underweight, normal weight, overweight and obesity in adults. It is calculated by dividing weight in kilograms by height in meters squared.
The calculator uses the BMI formula:
Where:
Explanation: The formula provides a simple numeric measure of a person's thickness or thinness, allowing health professionals to discuss weight problems objectively with their patients.
Details: BMI provides the most useful population-level measure of overweight and obesity as it is the same for both sexes and for all ages of adults. However, it should be considered a rough guide because it may not correspond to the same degree of fatness in different individuals.
Tips: Enter weight in kilograms and height in meters. For accurate results, measure height without shoes and weight in light clothing.
Q1: What is a healthy BMI range?
A: For most adults, a healthy BMI is between 18.5 and 24.9. Below 18.5 is underweight, 25-29.9 is overweight, and 30 or above is obese.
Q2: Is BMI accurate for everyone?
A: BMI may not be accurate for athletes (who may have high muscle mass), pregnant women, the elderly, or people with certain medical conditions.
Q3: Why is BMI important for women in South Africa?
A: South Africa has high rates of obesity, particularly among women. Monitoring BMI can help identify health risks early.
Q4: Should BMI be interpreted differently for different ethnic groups?
A: Some research suggests that South Asian populations may have higher health risks at lower BMI levels, while African populations may have lower risks at higher BMI levels.
Q5: What should I do if my BMI is outside the normal range?
A: Consult with a healthcare professional who can assess your overall health and provide personalized advice.