What is BMI and how is it calculated?

BMI (Body Mass Index) is a measure of body fat based on height and weight. It's calculated by dividing your weight in kilograms by your height in meters squared (kg/m²). For imperial units: (weight in pounds × 703) / (height in inches)². BMI helps assess if you're at a healthy weight for your height.

What is a healthy BMI range?

For adults, a healthy BMI range is 18.5 to 24.9. BMI categories are: Underweight (below 18.5), Normal weight (18.5-24.9), Overweight (25-29.9), and Obese (30 and above). However, BMI doesn't account for muscle mass, bone density, or body composition, so consult healthcare providers for personalized advice.

Is BMI accurate for everyone?

BMI is a useful screening tool but has limitations. It may not be accurate for athletes with high muscle mass, elderly people with low muscle mass, pregnant women, or growing children. BMI doesn't distinguish between muscle and fat. Always consult with healthcare professionals for a comprehensive health assessment.

How often should I calculate my BMI?

It's recommended to check your BMI every few months if you're tracking weight changes. Regular monitoring helps you stay aware of your health status. However, BMI is just one indicator - focus on overall health, fitness, and how you feel rather than obsessing over the number.

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Height (cm)

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BMI Categories

Underweight

BMI less than 18.5

Normal Weight

BMI 18.5 - 24.9

Overweight

BMI 25 - 29.9

Obese

BMI 30 or greater

About BMI

Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = kg/m² where kg is a person's weight in kilograms and m² is their height in meters squared.

BMI is used as a screening tool to identify possible weight problems for adults. However, BMI is not diagnostic. To determine if excess weight is a health risk, a healthcare provider would need to perform further assessments.

Important Note: BMI does not measure body fat directly and may not be accurate for athletes, elderly, pregnant women, or people with high muscle mass. Always consult with healthcare professionals for personalized health advice.

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