What's your metabolic age?
Is your metabolism younger or older than you?
Medical Disclaimer: This tool provides general educational estimates. Always consult your prescribing physician or healthcare provider before making medication changes or interpreting results from population-based models.
Frequently Asked Questions
Metabolic age compares your BMR to population averages. A higher BMR than average for your age means a younger metabolic age.
Yes. Resistance training 2-4x/week is most effective. Each pound of muscle burns ~6 cal/day at rest vs 2 for fat.
Mifflin-St Jeor predicts BMR within 10% for most people. Accuracy improves with Katch-McArdle when body fat is known.
Metabolic age focuses on BMR. Biological age is broader, incorporating epigenetic markers, telomere length, and organ function.
Sources
- Mifflin MD, St Jeor ST, et al. A new predictive equation for resting energy expenditure. Am J Clin Nutr. 1990;51(2):241-247. Link
- McArdle WD, Katch FI, Katch VL. Exercise Physiology. 8th ed. Lippincott Williams & Wilkins; 2014.
- Ravussin E, et al. Determinants of 24-hour energy expenditure in man. J Clin Invest. 1986;78(6):1568-1578. Link
Methodology
Uses Mifflin-St Jeor (or Katch-McArdle when body fat is provided) to compute BMR, then compares to sex-specific reference BMR values at ages 20-70.
Men: BMR = 10 x weight(kg) + 6.25 x height(cm) - 5 x age + 5
Women: BMR = 10 x weight(kg) + 6.25 x height(cm) - 5 x age - 161
Metabolic age compares your basal metabolic rate to population averages. If your BMR is higher than average for your age, your metabolic age is younger. The Mifflin-St Jeor equation predicts BMR within 10% for most adults. Building lean muscle through resistance training is the most effective way to lower metabolic age.
What else do you want to know?
Ask Pulse anything.