Quick Answer: What is wrong with using BMI?

Why we should not use BMI?

BMI is a reasonable indicator of body fat for both adults and children. Because BMI does not measure body fat directly, it should not be used as a diagnostic tool. Instead, BMI should be used as a measure to track weight status in populations and as a screening tool to identify potential weight problems in individuals.

Is BMI a bad way to measure health?

The bottom line. As a single measure, BMI is clearly not a perfect measure of health. But it’s still a useful starting point for important conditions that become more likely when a person is overweight or obese.

Why the BMI is outdated?

Research typically shows a greater risk of chronic disease as BMI increases above the “normal” range. Furthermore, a low BMI (below 18.5) is also linked to poor health outcomes. That said, BMI fails to consider other aspects of health, such as age, sex, fat mass, muscle mass, race, genetics, and medical history.

What are the pros and cons of using BMI as an assessment tool?

Body Mass Index Advantages and Disadvantages

  • Advantages: Accurate Measurements Across a Group.
  • Disadvantage: BMI Misses Normal Weight Obesity.
  • Disadvantages: BMI Overestimates Risk for Some.
  • Take a Holistic Approach to Measurements.
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Is the BMI outdated?

The body mass index, or BMI, was invented in the 1830s, and, as with many things that have been around for nearly 200 years, it seems to have outgrown its utility. There are four major problems with BMI, according to obesity experts: It doesn’t give you a good estimate of how much body fat you’re carrying around.

Is a BMI of 29 bad?

Underweight: BMI below 18.5. Normal: BMI of 18.5 to 24.9. Overweight: BMI of 25 to 29.9. Obese: BMI of 30 or higher.

Is BMI flawed for tall people?

Would it make a difference? Yes indeed. Roughly speaking, each person 6 feet tall would lose a point from their BMI reading, and each person 5 feet tall would gain a point.

Why does the NHS still use BMI?

But doctors use BMI in conjunction with other measures – like blood pressure, cholesterol and family history – to work out an individual’s risk of type 2 diabetes or heart disease, for example. Body mass index is not specific to any particular health risk – and that’s its strength, experts say.

What is an alternative to BMI?

Waist-to-height ratio (WHtR)

The cousin of the BMI, waist-to-height ratio compares — you guessed it — waist circumference to height, rather than overall weight to height squared. WHtR is more accurate than BMI because it takes central fat into consideration.

What are advantages and disadvantages of BMI?

The strengths include the fact that BMI is cheap and relatively easy to use. The weaknesses include the fact that BMI percentiles are not widely used, and categorization of BMI percentiles may not adequately define risk of comorbid conditions.

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What is the most significant disadvantage of using BMI to assess body composition?

BMI is a simple mathematical formula that measures body fat based on your height and weight. It does not take into account the source of the weight – whether it is from lean tissue or fat.