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What is a Normal Weight?
There is no such thing as ‘normal weight’ for a human. Even average weight has little meaning (unless it is expressed a as a range for someone of certain age, gender, race (and other demographic factors).
In other words, normal weight varies based on demographic factors like age, gender, race, muscle mass, bone density, and body composition.
WHO definition of normal weight
The World Health Organization (WHO) defines normal weight using body mass index (BMI). For adults, a BMI between 18.5 and 25 is considered normal.
With BMI, what is normal, or shows you are underweight, overweight or obese?
Body mass index (BMI) – for adults:
- Underweight: <18.5
- Healthy weight: 18.5–25
- Overweight: 25-30
- Obese: ≥ 30
- Severely obese: ≥ 40
Note: different thresholds apply to certain ethnic backgrounds.
- However, BMI has limitations, as it doesn’t account for muscle mass or body composition
- For children and teenagers, BMI should not be used; and normal weight ranges are often determined using growth charts that consider age and sex.
Summary
There is no such thing as normal weight.
If you’re concerned about your weight, consider consulting a doctor dietitian who can assess your overall
health and provide personalised guidance.
