BMI Standards for Adult Men
While the BMI formula (weight/height²) is identical for men and women, the interpretation for men
often accounts for higher bone density and muscle mass. The World Health Organization (WHO) uses
these standard ranges:
| Category |
BMI Range |
| Underweight |
Less than 18.5 |
| Normal Weight |
18.5 – 24.9 |
| Overweight |
25.0 – 29.9 |
| Obese |
30.0 or more |
The Muscle Factor in Men
Men naturally possess more skeletal muscle mass than women. Because muscle is more dense than
fat, an athletic man might have a high BMI despite having very low body fat. For example, many
professional rugby players or bodybuilders fall into the "obese" category based solely on weight
and height.
BMI and Male Health Risks
For men, a high BMI is strongly linked to visceral fat (fat around the organs), which increases
the risk of heart disease, hypertension, and type 2 diabetes. Men tend to carry more weight in
their abdominal region ("apple shape"), which is more metabolically active and dangerous than
weight carried in the hips and thighs.