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About

Men tend to accumulate visceral fat around the abdomen, known as an "Apple" shape. This central obesity is metabolically active and significantly more dangerous than subcutaneous fat, linking directly to hypertension, Type 2 diabetes, and heart disease. A standard BMI calculation alone often misses this risk profile in men who may have a "normal" weight but a high waist-to-height ratio.

This tool combines standard Body Mass Index logic with a Waist Circumference Screening. If your BMI is elevated, the tool checks your waist size. A waist over 40 inches (102 cm) drastically upgrades your health risk category, regardless of what the simple BMI number says.

mens health heart health visceral fat BMI waist circumference

Formulas

Risk assessment relies on the interaction between BMI and Waist Circumference (WC).

BMI = weight(kg)height2(m)

The logic evaluates the boolean condition of Central Obesity:

HighRisk WC > 102 cm BMI 30

Note: 102 cm is approx 40 inches.

Reference Data

BMI RangeWaist 40"Waist > 40"
18.5 24.9Low RiskModerate Risk (Skinny Fat)
25.0 29.9Increased RiskHigh Risk
30.0 34.9High RiskVery High Risk
35.0 39.9Very High RiskExtremely High Risk
40Extremely High RiskExtremely High Risk

Frequently Asked Questions

You can have a normal BMI but carry dangerous visceral fat around your organs (TOFI: Thin Outside, Fat Inside). A waist over 40 inches in men is a strong predictor of metabolic syndrome, even if total weight is not excessive.
Do not use your pants size. Use a tape measure. Place it around your middle, just above your hip bones, exhale normally, and measure. It is usually at the level of the belly button.
Bodybuilders will have a high BMI due to muscle. However, their waist size is usually small (under 40 inches). This tool handles that wellโ€”if BMI is high but waist is low, the risk profile remains lower than someone with a 'beer belly'.