Our expert says:
Eating Disorders Expert
You are likely calculating correctly, because with a weight of 43 kilograms, your BMI is 18.37, which is slightly underweight. A normal BMI falls between 18.5 and 24. The calculation is to place your weight (in kilograms) over your height (in metres) squared. In other words, 43 divided by 1.53 X 1.53. Looking for bones sticking out is not the scientific of definitive way of dertermining whether you are underweight. You might also be slightly distorted in your perception of yourself, but it is difficult for me to speculate. Perhaps seek some professional dietary advice to see what a healthy daily intake would be for you. Although a normal BMI falls between 18.5 and 24, don't assume that having a BMI of 18.5 is necessary the correct weight for you. We each have a set-point weight, which is the weight at which our body wants to remain fairly stable. For instance, the average BMI of an 18 year old South African female is 22.7. Hope this helps.
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