BMI Guide: Calculate Healthy Body Mass Index by Age and Gender

Body Mass Index (BMI) serves as a key indicator of cardiovascular health and general wellness. Learn how to calculate BMI for athletes, children, and amputees, and understand what your results mean.

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What to Do If Your BMI Is 18.5?

When it comes to the relationship between weight and health, there's no one-size-fits-all ideal you can call on to make sure you're on the right track. If your BMI is 18.5, you're on the low end of what's considered healthy, but you may or may not be at a healthy weight. If you're naturally very slim, a BMI of 18.

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