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🧠 1. The most used method: BMI (Body Mass Index)
BMI estimates whether your weight is in a healthy range for your height.
📊 BMI Categories:
- Underweight: below 18.5
- Normal weight: 18.5 – 24.9
- Overweight: 25 – 29.9
- Obesity: 30+
A “healthy weight range” usually means BMI 18.5–24.9.
📏 2. Quick healthy weight ranges by height (adults)
Here are approximate healthy weight ranges using BMI:
👤 Height: 150 cm (4’11”)
- Healthy weight: 42 – 56 kg
👤 Height: 160 cm (5’3″)
- Healthy weight: 47 – 64 kg
👤 Height: 170 cm (5’7″)
- Healthy weight: 54 – 72 kg
👤 Height: 180 cm (5’11”)
- Healthy weight: 60 – 81 kg
👤 Height: 190 cm (6’3″)
- Healthy weight: 67 – 90 kg
These are general estimates, not exact medical prescriptions.
🧓 3. Does age change ideal weight?
Age does NOT change BMI categories, but it does affect how weight is distributed and what is considered “healthy” in practice.
As you age:
- Muscle mass naturally decreases
- Fat tends to increase (especially around the abdomen)
- Metabolism slows slightly
So two people with the same BMI may look and feel different at age 25 vs age 65.
🧬 4. Why BMI is not perfect
BMI does NOT measure:
- Muscle mass
- Bone density
- Fat distribution
- Fitness level
For example:
- A muscular athlete may be “overweight” by BMI but very healthy
- An older person may have “normal BMI” but high body fat
That’s why BMI is a screening tool, not a diagnosis.
🩺 5. Better indicators of healthy weight
Doctors also look at:
📏 Waist circumference
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