BMI (Body Mass Index) is a measure of body fat based on height and weight. It's a simple screening tool used to categorize weight status and assess potential health risks associated with being underweight, normal weight, overweight, or obese.

BMI provides a quick estimate of body fatness and is widely used by healthcare professionals as a starting point for evaluating health risks.

BMI is calculated using the formula:

For example, if you weigh 70 kg and are 1.75 m tall:
BMI = 70 ÷ (1.75 × 1.75) = 22.9

• Underweight: BMI < 18.5 - May indicate nutritional deficiency or other health issues
• Normal weight: BMI 18.5-24.9 - Generally considered healthy range
• Overweight: BMI 25-29.9 - May increase risk of health problems
• Obese: BMI ≥ 30 - Higher risk of serious health conditions

While BMI is a useful screening tool, it has limitations:

• Doesn't distinguish between muscle and fat mass
• May overestimate body fat in muscular individuals
• May underestimate body fat in older adults who have lost muscle mass
• Doesn't account for body fat distribution (waist circumference is also important)
• May not be accurate for athletes, pregnant women, or certain ethnic groups

Maintaining a healthy BMI (18.5-24.9) is associated with:

• Lower risk of heart disease and stroke
• Reduced risk of type 2 diabetes
• Better blood pressure control
• Improved sleep quality
• Better joint health

Always consult a healthcare professional for personalized health advice. BMI is just one indicator of health and should be used alongside other measurements like:

• Waist circumference
• Blood pressure
• Cholesterol levels
• Blood sugar levels
• Overall lifestyle factors

This calculator is for informational purposes only and should not replace professional medical advice.