Q1: What is BMI and how is it calculated?
BMI (Body Mass Index) is a measure of body fat based on height and weight. Formula: BMI = weight (kg) / height (m)². For imperial units: BMI = (weight in lbs / height in inches²) × 703. It provides a simple screening tool for weight categories.
Q2: What do the BMI categories mean?
BMI categories: Underweight (<18.5), Normal weight (18.5-24.9), Overweight (25-29.9), and Obese (≥30). These ranges are general guidelines and may not apply to everyone, especially athletes or those with high muscle mass.
Q3: Is BMI accurate for everyone?
BMI has limitations. It doesn't distinguish between muscle and fat, so athletes with high muscle mass may be classified as overweight. It also doesn't account for bone density, age, gender differences, or fat distribution. Consult healthcare providers for personalized assessment.
Q4: What is a healthy BMI range?
A healthy BMI typically falls between 18.5 and 24.9. However, "healthy" varies by individual. Factors like muscle mass, bone density, age, and overall health should be considered alongside BMI for a complete health picture.
Q5: Can BMI be used for children and teens?
BMI calculations for children and teens use age and sex-specific percentiles, not fixed categories. Standard BMI calculators are designed for adults (18+). Pediatric BMI should be interpreted by healthcare professionals using growth charts.
Q6: Should I rely solely on BMI for health assessment?
No, BMI is just one screening tool. A comprehensive health assessment should include: body composition, waist circumference, blood pressure, cholesterol, blood sugar, physical fitness, and overall lifestyle factors. Consult healthcare providers for complete evaluation.