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Since the late 1900s, doctors and health officials have been using BMI to track patient’s health.

By dividing an adult’s weight by the square of their height, BMI tells us whether someone is over, under or at a healthy weight.

It was first created in the 1800s by Belgian mathematician Adolphe Quetele, and by the late 1900s, it was being used across the globe.

By using just two measures of weight and height, health officials were drawn to its simplicity.

And in May of this year, there were calls for the government to consider BMI when distinguishing who falls into the vulnerable category in relation