Why Do Results Differ Across Formulas?
Different clinical equations were developed across various decades by researchers analyzing specific demographic samples. For example, Devine (1974) was formulated for pharmacological clearance, while Robinson (1983) updated values based on empirical population surveys. The consensus range represents the most realistic target.
Body Frame Size & Muscle Mass
These classic formulas do not distinguish between body fat and lean muscle mass. If you have an athletic build, broad shoulders, or a large bone structure (large frame), your healthy weight may be 10% higher than the baseline formula calculation.
Safe Weight Management Recommendations
To reach or maintain your ideal weight, healthcare organizations like the WHO and NHS recommend a balanced diet with whole foods, regular cardiovascular and strength training, and a sustainable caloric deficit or surplus of 300–500 kcal per day (aiming for 0.5 kg / 1 lb per week).
