Most Americans are familiar with the colorful Body Mass Index chart at our doctor's office.

And plenty of us are trying to fit ourselves into the coveted "green zone" of that chart!

But researchers argue this chart is outdated and basically useless.

Instead, we should be paying attention to our waist measurement.

People with large waists were at a similar risk of developing diabetes as people who were clinically obese.

And by "large," they mean more than 34.5 inches for women and more than 40 inches for men!

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