What does it mean to have a high body mass index (BMI), according to the World Health Organization?

Learn the implications of a high BMI and why it can be relevant for your overall health

Body mass index, BMI, World Health Organization

Person on a weight scale.

The body mass index (BMI) is a simple calculation based on your height and weight that offers a quick way to screen for potential issues related to body weight. While it’s not a perfect measure of body fat, BMI is widely used by researchers and public health experts as a starting point for evaluating risks.

This tool provides a general idea of whether someone is underweight, at a normal weight, overweight, or obese. Here, we’ll explore what a high BMI means according to the World Health Organization (WHO) and examine the associated implications. Keep in mind that this information is for general guidance, and consulting your doctor for personalized advice is always a smart idea. Let’s begin.

Body mass index categories

The World Health Organization has established guidelines to categorize BMI into different groups. These categories include:

These ranges are designed to help healthcare providers and researchers assess the overall health of populations. It’s important to note that this categorization is for adults and doesn’t always give the full picture of an individual’s health. For example, athletes with significant muscle mass may have a higher BMI without excess fat.

Health risks of a high BMI

A high BMI is often linked to an increased risk of various health problems. A BMI above 25 is classified as overweight, while a BMI over 30 falls into the obese category. These numbers can indicate a higher likelihood of developing certain conditions.

When BMI is elevated, it often suggests an excess of body fat that may not be ideal for our health. Fat stored around the abdominal area, in particular, can have significant impacts on your body. Here are some risks that can be associated with a high BMI:

While not everyone with a high BMI experiences these issues, the risks are well-documented. Maintaining a healthy weight is generally a good step toward long-term well-being and preventing chronic conditions.

BMI is a tool that provides a quick snapshot of body weight concerning health, and the WHO’s classifications offer a framework for understanding what’s considered a healthy range. A high BMI can indicate excess body fat, which is often associated with risks like heart disease, diabetes, and more. However, it’s important to remember that BMI is just one part of the bigger picture.

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