Why does BMI have units of kg/m^2 when we are three dimensional? Wouldn’t kg/m^3 or g/cm^3 be more accurate?

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Why does BMI have units of kg/m^2 when we are three dimensional? Wouldn’t kg/m^3 or g/cm^3 be more accurate?

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BMI is a ratio of body weight in relation to height, so if you changed the ratio it wouldn’t matter. A healthy person with a bmi of 20 wouldn’t be classified as obese because the scalings also change along with the formula. Different number, same bmi, just like how converting dollars into different currencies doesn’t make you more wealthy.

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