How does Mifflin-St Jeor compare to Harris-Benedict?

Mifflin-St Jeor (1990) was validated in a population more representative of modern adults. Multiple studies show it is more accurate (within 10% of measured RMR in ~82% of non-obese adults vs. ~69% for Harris-Benedict).

What are the Mifflin-St Jeor equations?

Male RMR = 10 x weight (kg) + 6.25 x height (cm) - 5 x age (years) + 5. Female RMR = 10 x weight (kg) + 6.25 x height (cm) - 5 x age (years) - 161. Both in kcal/day.

Is Mifflin-St Jeor accurate in obese patients?

Accuracy decreases in severe obesity (BMI > 35). Some studies recommend the Ireton-Jones equation for obese patients, or using adjusted body weight in the Mifflin-St Jeor formula to avoid overestimation.

Mifflin-St Jeor Equation for RMR

Calculate resting metabolic rate (RMR) using Mifflin-St Jeor equation. Male: 10xW + 6.25xH - 5xA + 5. Female: 10xW + 6.25xH - 5xA - 161. More accurate than Harris-Benedict in non-obese adults.

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Frequently Asked Questions

How does Mifflin-St Jeor compare to Harris-Benedict?

What are the Mifflin-St Jeor equations?

Is Mifflin-St Jeor accurate in obese patients?